345550431 has 4 divisors (see below), whose sum is σ = 460733912. Its totient is φ = 230366952.

The previous prime is 345550409. The next prime is 345550453. The reversal of 345550431 is 134055543.

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

It is an interprime number because it is at equal distance from previous prime (345550409) and next prime (345550453).

It is not a de Polignac number, because 345550431 - 2²⁶ = 278441567 is a prime.

It is a super-2 number, since 2×345550431² = 238810200728571522, 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 (345550531) 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, 57591736 + ... + 57591741.

It is an arithmetic number, because the mean of its divisors is an integer number (115183478).

Almost surely, 2^345550431 is an apocalyptic number.

345550431 is a deficient number, since it is larger than the sum of its proper divisors (115183481).

345550431 is a wasteful number, since it uses less digits than its factorization.

345550431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115183480.

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 345550431 is about 18588.9868201578. The cubic root of 345550431 is about 701.7307044939.

The spelling of 345550431 in words is "three hundred forty-five million, five hundred fifty thousand, four hundred thirty-one".