312220303131 has 16 divisors (see below), whose sum is σ = 463801148928. Its totient is φ = 185198373600.

The previous prime is 312220303099. The next prime is 312220303141. The reversal of 312220303131 is 131303022213.

It is not a de Polignac number, because 312220303131 - 2⁵ = 312220303099 is a prime.

It is a super-2 number, since 2×312220303131² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 312220303098 and 312220303107.

It is not an unprimeable number, because it can be changed into a prime (312220303141) 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, 100649740 + ... + 100652841.

It is an arithmetic number, because the mean of its divisors is an integer number (28987571808).

Almost surely, 2^312220303131 is an apocalyptic number.

312220303131 is a deficient number, since it is larger than the sum of its proper divisors (151580845797).

312220303131 is a wasteful number, since it uses less digits than its factorization.

312220303131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201302642.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 312220303131 its reverse (131303022213), we get a palindrome (443523325344).

The spelling of 312220303131 in words is "three hundred twelve billion, two hundred twenty million, three hundred three thousand, one hundred thirty-one".