345889131 has 16 divisors (see below), whose sum is σ = 527645184. Its totient is φ = 197434944.

The previous prime is 345889127. The next prime is 345889139. The reversal of 345889131 is 131988543.

It is not a de Polignac number, because 345889131 - 2² = 345889127 is a prime.

It is a super-2 number, since 2×345889131² = 239278581887870322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (345889139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11791 + ... + 28823.

It is an arithmetic number, because the mean of its divisors is an integer number (32977824).

Almost surely, 2^345889131 is an apocalyptic number.

345889131 is a deficient number, since it is larger than the sum of its proper divisors (181756053).

345889131 is a wasteful number, since it uses less digits than its factorization.

345889131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18010.

The product of its digits is 103680, while the sum is 42.

The square root of 345889131 is about 18598.0948217821. The cubic root of 345889131 is about 701.9599026618.

The spelling of 345889131 in words is "three hundred forty-five million, eight hundred eighty-nine thousand, one hundred thirty-one".