311325561645651 has 12 divisors (see below), whose sum is σ = 513934260494512. Its totient is φ = 177900320940336.

The previous prime is 311325561645643. The next prime is 311325561645673. The reversal of 311325561645651 is 156546165523113.

311325561645651 is a `hidden beast` number, since 3 + 1 + 1 + 3 + 25 + 56 + 1 + 6 + 4 + 565 + 1 = 666.

It is not a de Polignac number, because 311325561645651 - 2³ = 311325561645643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311325561645251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2470837790776 + ... + 2470837790901.

Almost surely, 2^{311325561645651} is an apocalyptic number.

311325561645651 is a deficient number, since it is larger than the sum of its proper divisors (202608698848861).

311325561645651 is a wasteful number, since it uses less digits than its factorization.

311325561645651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4941675581690 (or 4941675581687 counting only the distinct ones).

The product of its digits is 9720000, while the sum is 54.

The spelling of 311325561645651 in words is "three hundred eleven trillion, three hundred twenty-five billion, five hundred sixty-one million, six hundred forty-five thousand, six hundred fifty-one".