31210231122131 has 8 divisors (see below), whose sum is σ = 32217368137728. Its totient is φ = 30203116317000.

The previous prime is 31210231122113. The next prime is 31210231122143. The reversal of 31210231122131 is 13122113201213.

It is a happy number.

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 31210231122131 - 2³⁸ = 30935353215187 is a prime.

It is a super-2 number, since 2×31210231122131² (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 = 31210231122097 and 31210231122106.

It is not an unprimeable number, because it can be changed into a prime (31210231122151) 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, 2673155 + ... + 8340636.

It is an arithmetic number, because the mean of its divisors is an integer number (4027171017216).

Almost surely, 2^{31210231122131} is an apocalyptic number.

31210231122131 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

31210231122131 is a deficient number, since it is larger than the sum of its proper divisors (1007137015597).

31210231122131 is a wasteful number, since it uses less digits than its factorization.

31210231122131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11105233.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 31210231122131 its reverse (13122113201213), we get a palindrome (44332344323344).

The spelling of 31210231122131 in words is "thirty-one trillion, two hundred ten billion, two hundred thirty-one million, one hundred twenty-two thousand, one hundred thirty-one".