345066431 has 4 divisors (see below), whose sum is σ = 345373200. Its totient is φ = 344759664.

The previous prime is 345066413. The next prime is 345066481. The reversal of 345066431 is 134660543.

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 345066431 - 2⁶ = 345066367 is a prime.

It is a super-2 number, since 2×345066431² = 238141683606155522, 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 (345066481) 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, 151691 + ... + 153948.

It is an arithmetic number, because the mean of its divisors is an integer number (86343300).

Almost surely, 2^345066431 is an apocalyptic number.

345066431 is a deficient number, since it is larger than the sum of its proper divisors (306769).

345066431 is a wasteful number, since it uses less digits than its factorization.

345066431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306768.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 345066431 is about 18575.9637973377. The cubic root of 345066431 is about 701.4029217964.

The spelling of 345066431 in words is "three hundred forty-five million, sixty-six thousand, four hundred thirty-one".