312010220131 has 4 divisors (see below), whose sum is σ = 312164912392. Its totient is φ = 311855527872.

The previous prime is 312010220111. The next prime is 312010220147. The reversal of 312010220131 is 131022010213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131022010213 = 16369 ⋅8004277.

It is a cyclic number.

It is not a de Polignac number, because 312010220131 - 2⁷ = 312010220003 is a prime.

It is a super-2 number, since 2×312010220131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312010220111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77343105 + ... + 77347138.

It is an arithmetic number, because the mean of its divisors is an integer number (78041228098).

Almost surely, 2^312010220131 is an apocalyptic number.

312010220131 is a deficient number, since it is larger than the sum of its proper divisors (154692261).

312010220131 is a wasteful number, since it uses less digits than its factorization.

312010220131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154692260.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 312010220131 its reverse (131022010213), we get a palindrome (443032230344).

The spelling of 312010220131 in words is "three hundred twelve billion, ten million, two hundred twenty thousand, one hundred thirty-one".