345204431 has 24 divisors (see below), whose sum is σ = 430865904. Its totient is φ = 272609280.

The previous prime is 345204421. The next prime is 345204443. The reversal of 345204431 is 134402543.

It is not a de Polignac number, because 345204431 - 2⁶ = 345204367 is a prime.

It is a super-2 number, since 2×345204431² = 238332198364067522, 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 345204431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345204421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37151 + ... + 45503.

It is an arithmetic number, because the mean of its divisors is an integer number (17952746).

Almost surely, 2^345204431 is an apocalyptic number.

345204431 is a deficient number, since it is larger than the sum of its proper divisors (85661473).

345204431 is a wasteful number, since it uses less digits than its factorization.

345204431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8411 (or 8394 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 345204431 is about 18579.6779035590. The cubic root of 345204431 is about 701.4964117199.

Adding to 345204431 its reverse (134402543), we get a palindrome (479606974).

The spelling of 345204431 in words is "three hundred forty-five million, two hundred four thousand, four hundred thirty-one".