345437431 has 4 divisors (see below), whose sum is σ = 346116600. Its totient is φ = 344758264.

The previous prime is 345437419. The next prime is 345437453. The reversal of 345437431 is 134734543.

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

It is a cyclic number.

It is not a de Polignac number, because 345437431 - 2¹⁵ = 345404663 is a prime.

It is a super-2 number, since 2×345437431² = 238654037471759522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345437831) 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, 338821 + ... + 339838.

It is an arithmetic number, because the mean of its divisors is an integer number (86529150).

Almost surely, 2^345437431 is an apocalyptic number.

345437431 is a deficient number, since it is larger than the sum of its proper divisors (679169).

345437431 is an equidigital number, since it uses as much as digits as its factorization.

345437431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679168.

The product of its digits is 60480, while the sum is 34.

The square root of 345437431 is about 18585.9471375553. The cubic root of 345437431 is about 701.6542041169.

The spelling of 345437431 in words is "three hundred forty-five million, four hundred thirty-seven thousand, four hundred thirty-one".