31321112012131 has 8 divisors (see below), whose sum is σ = 31713203415024. Its totient is φ = 30931389742080.

The previous prime is 31321112012129. The next prime is 31321112012143. The reversal of 31321112012131 is 13121021112313.

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 31321112012131 - 2¹ = 31321112012129 is a prime.

It is a super-2 number, since 2×31321112012131² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31321112012161) 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, 592256605 + ... + 592309486.

It is an arithmetic number, because the mean of its divisors is an integer number (3964150426878).

Almost surely, 2^{31321112012131} is an apocalyptic number.

31321112012131 is a deficient number, since it is larger than the sum of its proper divisors (392091402893).

31321112012131 is a wasteful number, since it uses less digits than its factorization.

31321112012131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1184566421.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 31321112012131 its reverse (13121021112313), we get a palindrome (44442133124444).

The spelling of 31321112012131 in words is "thirty-one trillion, three hundred twenty-one billion, one hundred twelve million, twelve thousand, one hundred thirty-one".