31311313122 has 16 divisors (see below), whose sum is σ = 64315130112. Its totient is φ = 10155020400.

The previous prime is 31311313087. The next prime is 31311313127. The reversal of 31311313122 is 22131311313.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (31311313127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70520754 + ... + 70521197.

It is an arithmetic number, because the mean of its divisors is an integer number (4019695632).

Almost surely, 2^31311313122 is an apocalyptic number.

31311313122 is an abundant number, since it is smaller than the sum of its proper divisors (33003816990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31311313122 is a wasteful number, since it uses less digits than its factorization.

31311313122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141041993.

The product of its digits is 324, while the sum is 21.

Adding to 31311313122 its reverse (22131311313), we get a palindrome (53442624435).

It can be divided in two parts, 3131 and 1313122, that added together give a triangular number (1316253 = T₁₆₂₂).

The spelling of 31311313122 in words is "thirty-one billion, three hundred eleven million, three hundred thirteen thousand, one hundred twenty-two".