309956685352 has 32 divisors (see below), whose sum is σ = 610068412800. Its totient is φ = 147352473664.

The previous prime is 309956685347. The next prime is 309956685359. The reversal of 309956685352 is 253586659903.

It is not an unprimeable number, because it can be changed into a prime (309956685359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5012827 + ... + 5074282.

It is an arithmetic number, because the mean of its divisors is an integer number (19064637900).

Almost surely, 2^309956685352 is an apocalyptic number.

It is an amenable number.

309956685352 is a deficient number, since it is larger than the sum of its proper divisors (300111727448).

309956685352 is a wasteful number, since it uses less digits than its factorization.

309956685352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10087305 (or 10087301 counting only the distinct ones).

The product of its (nonzero) digits is 52488000, while the sum is 61.

The spelling of 309956685352 in words is "three hundred nine billion, nine hundred fifty-six million, six hundred eighty-five thousand, three hundred fifty-two".