313113440031021 has 64 divisors (see below), whose sum is σ = 530609688322560. Its totient is φ = 178763232061440.

The previous prime is 313113440031019. The next prime is 313113440031023. The reversal of 313113440031021 is 120130044311313.

313113440031021 is a `hidden beast` number, since 3 + 1 + 3 + 1 + 1 + 344 + 0 + 0 + 310 + 2 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (313113440031019) and next prime (313113440031023).

It is not a de Polignac number, because 313113440031021 - 2¹ = 313113440031019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313113440031023) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 974065695 + ... + 974387091.

It is an arithmetic number, because the mean of its divisors is an integer number (8290776380040).

Almost surely, 2^{313113440031021} is an apocalyptic number.

It is an amenable number.

313113440031021 is a deficient number, since it is larger than the sum of its proper divisors (217496248291539).

313113440031021 is a wasteful number, since it uses less digits than its factorization.

313113440031021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325971 (or 325965 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 313113440031021 its reverse (120130044311313), we get a palindrome (433243484342334).

The spelling of 313113440031021 in words is "three hundred thirteen trillion, one hundred thirteen billion, four hundred forty million, thirty-one thousand, twenty-one".