342511031 has 4 divisors (see below), whose sum is σ = 343029864. Its totient is φ = 341992200.

The previous prime is 342511021. The next prime is 342511049. The reversal of 342511031 is 130115243.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-342511031 is a prime.

It is a super-2 number, since 2×342511031² = 234627612713365922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 342510994 and 342511012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342511021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258425 + ... + 259746.

It is an arithmetic number, because the mean of its divisors is an integer number (85757466).

Almost surely, 2^342511031 is an apocalyptic number.

342511031 is a deficient number, since it is larger than the sum of its proper divisors (518833).

342511031 is an equidigital number, since it uses as much as digits as its factorization.

342511031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518832.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 342511031 is about 18507.0535472290. The cubic root of 342511031 is about 699.6672098390.

Adding to 342511031 its reverse (130115243), we get a palindrome (472626274).

The spelling of 342511031 in words is "three hundred forty-two million, five hundred eleven thousand, thirty-one".