31320333312131 has 8 divisors (see below), whose sum is σ = 31404583702560. Its totient is φ = 31236120349632.

The previous prime is 31320333312113. The next prime is 31320333312143. The reversal of 31320333312131 is 13121333302313.

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 31320333312131 - 2²² = 31320329117827 is a prime.

It is a super-2 number, since 2×31320333312131² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31320333312094 and 31320333312103.

It is not an unprimeable number, because it can be changed into a prime (31320333312031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7680695 + ... + 11028768.

It is an arithmetic number, because the mean of its divisors is an integer number (3925572962820).

Almost surely, 2^{31320333312131} is an apocalyptic number.

31320333312131 is a deficient number, since it is larger than the sum of its proper divisors (84250390429).

31320333312131 is a wasteful number, since it uses less digits than its factorization.

31320333312131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18713965.

The product of its (nonzero) digits is 8748, while the sum is 29.

Adding to 31320333312131 its reverse (13121333302313), we get a palindrome (44441666614444).

The spelling of 31320333312131 in words is "thirty-one trillion, three hundred twenty billion, three hundred thirty-three million, three hundred twelve thousand, one hundred thirty-one".