2131001222031 has 96 divisors (see below), whose sum is σ = 3451513089024. Its totient is φ = 1255980960000.

The previous prime is 2131001221991. The next prime is 2131001222039. The reversal of 2131001222031 is 1302221001312.

It is not a de Polignac number, because 2131001222031 - 2¹⁴ = 2131001205647 is a prime.

It is a super-2 number, since 2×2131001222031² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2131001221995 and 2131001222013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131001222039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 894250266 + ... + 894252648.

It is an arithmetic number, because the mean of its divisors is an integer number (35953261344).

Almost surely, 2^{2131001222031} is an apocalyptic number.

2131001222031 is a deficient number, since it is larger than the sum of its proper divisors (1320511866993).

2131001222031 is a wasteful number, since it uses less digits than its factorization.

2131001222031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3885 (or 3882 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 2131001222031 its reverse (1302221001312), we get a palindrome (3433222223343).

The spelling of 2131001222031 in words is "two trillion, one hundred thirty-one billion, one million, two hundred twenty-two thousand, thirty-one".