431402111 has 4 divisors (see below), whose sum is σ = 493030992. Its totient is φ = 369773232.

The previous prime is 431402077. The next prime is 431402113. The reversal of 431402111 is 111204134.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111204134 = 2 ⋅55602067.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431402111 is a prime.

It is a super-2 number, since 2×431402111² = 372215562750512642, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 431402111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431402113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30814430 + ... + 30814443.

It is an arithmetic number, because the mean of its divisors is an integer number (123257748).

Almost surely, 2^431402111 is an apocalyptic number.

431402111 is a deficient number, since it is larger than the sum of its proper divisors (61628881).

431402111 is an equidigital number, since it uses as much as digits as its factorization.

431402111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61628880.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 431402111 is about 20770.2217369002. The cubic root of 431402111 is about 755.6037221944.

Adding to 431402111 its reverse (111204134), we get a palindrome (542606245).

The spelling of 431402111 in words is "four hundred thirty-one million, four hundred two thousand, one hundred eleven".