31021313110131 has 8 divisors (see below), whose sum is σ = 41522691479184. Its totient is φ = 20600405073920.

The previous prime is 31021313110127. The next prime is 31021313110187. The reversal of 31021313110131 is 13101131312013.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31021313110131 - 2² = 31021313110127 is a prime.

It is a super-2 number, since 2×31021313110131² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31021313110098 and 31021313110107.

It is not an unprimeable number, because it can be changed into a prime (31021313110331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20117582310 + ... + 20117583851.

It is an arithmetic number, because the mean of its divisors is an integer number (5190336434898).

Almost surely, 2^{31021313110131} is an apocalyptic number.

31021313110131 is a deficient number, since it is larger than the sum of its proper divisors (10501378369053).

31021313110131 is a wasteful number, since it uses less digits than its factorization.

31021313110131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40235166421.

The product of its (nonzero) digits is 162, while the sum is 21.

Adding to 31021313110131 its reverse (13101131312013), we get a palindrome (44122444422144).

The spelling of 31021313110131 in words is "thirty-one trillion, twenty-one billion, three hundred thirteen million, one hundred ten thousand, one hundred thirty-one".