311917928644 has 12 divisors (see below), whose sum is σ = 623835857344. Its totient is φ = 133679112264.

The previous prime is 311917928579. The next prime is 311917928659. The reversal of 311917928644 is 446829719113.

311917928644 is an admirable number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5569962984 + ... + 5569963039.

Almost surely, 2^311917928644 is an apocalyptic number.

It is an amenable number.

311917928644 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311917928644 is a wasteful number, since it uses less digits than its factorization.

311917928644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11139926034 (or 11139926032 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 55.

The spelling of 311917928644 in words is "three hundred eleven billion, nine hundred seventeen million, nine hundred twenty-eight thousand, six hundred forty-four".