310131320223121 has 16 divisors (see below), whose sum is σ = 314810182466640. Its totient is φ = 305483661250560.

The previous prime is 310131320223113. The next prime is 310131320223139. The reversal of 310131320223121 is 121322023131013.

It can be written as a sum of positive squares in 8 ways, for example, as 36026873013121 + 274104447210000 = 6002239^2 + 16556100^2 .

It is a cyclic number.

It is not a de Polignac number, because 310131320223121 - 2³ = 310131320223113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (310131320223521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59171691 + ... + 64199311.

It is an arithmetic number, because the mean of its divisors is an integer number (19675636404165).

Almost surely, 2^{310131320223121} is an apocalyptic number.

It is an amenable number.

310131320223121 is a deficient number, since it is larger than the sum of its proper divisors (4678862243519).

310131320223121 is a wasteful number, since it uses less digits than its factorization.

310131320223121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5030724.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 310131320223121 its reverse (121322023131013), we get a palindrome (431453343354134).

The spelling of 310131320223121 in words is "three hundred ten trillion, one hundred thirty-one billion, three hundred twenty million, two hundred twenty-three thousand, one hundred twenty-one".