213433331431 has 8 divisors (see below), whose sum is σ = 215659753344. Its totient is φ = 211207441920.

The previous prime is 213433331411. The next prime is 213433331521. The reversal of 213433331431 is 134133334312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213433331431 - 2¹⁷ = 213433200359 is a prime.

It is a super-2 number, since 2×213433331431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213433331393 and 213433331402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213433331411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 699891 + ... + 957451.

It is an arithmetic number, because the mean of its divisors is an integer number (26957469168).

Almost surely, 2^213433331431 is an apocalyptic number.

213433331431 is a deficient number, since it is larger than the sum of its proper divisors (2226421913).

213433331431 is an equidigital number, since it uses as much as digits as its factorization.

213433331431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266201.

The product of its digits is 23328, while the sum is 31.

Adding to 213433331431 its reverse (134133334312), we get a palindrome (347566665743).

The spelling of 213433331431 in words is "two hundred thirteen billion, four hundred thirty-three million, three hundred thirty-one thousand, four hundred thirty-one".