309131312434 has 16 divisors (see below), whose sum is σ = 535084437888. Its totient is φ = 131198586912.

The previous prime is 309131312429. The next prime is 309131312447. The reversal of 309131312434 is 434213131903.

It is a self number, because there is not a number n which added to its sum of digits gives 309131312434.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107186947 + ... + 107189830.

It is an arithmetic number, because the mean of its divisors is an integer number (33442777368).

Almost surely, 2^309131312434 is an apocalyptic number.

309131312434 is a deficient number, since it is larger than the sum of its proper divisors (225953125454).

309131312434 is a wasteful number, since it uses less digits than its factorization.

309131312434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214376889.

The product of its (nonzero) digits is 23328, while the sum is 34.

The spelling of 309131312434 in words is "three hundred nine billion, one hundred thirty-one million, three hundred twelve thousand, four hundred thirty-four".