345725431 has 2 divisors, whose sum is σ = 345725432. Its totient is φ = 345725430.

The previous prime is 345725383. The next prime is 345725477. The reversal of 345725431 is 134527543.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 345725431 - 2¹¹ = 345723383 is a prime.

It is a super-2 number, since 2×345725431² = 239052147280271522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345728431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172862715 + 172862716.

It is an arithmetic number, because the mean of its divisors is an integer number (172862716).

Almost surely, 2^345725431 is an apocalyptic number.

345725431 is a deficient number, since it is larger than the sum of its proper divisors (1).

345725431 is an equidigital number, since it uses as much as digits as its factorization.

345725431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 34.

The square root of 345725431 is about 18593.6933125186. The cubic root of 345725431 is about 701.8491456219.

The spelling of 345725431 in words is "three hundred forty-five million, seven hundred twenty-five thousand, four hundred thirty-one".