2131023122031 has 4 divisors (see below), whose sum is σ = 2841364162712. Its totient is φ = 1420682081352.

The previous prime is 2131023122009. The next prime is 2131023122093. The reversal of 2131023122031 is 1302213201312.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2131023122031 - 2⁶ = 2131023121967 is a prime.

It is a super-2 number, since 2×2131023122031² (a number of 25 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 = 2131023121989 and 2131023122007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131023122131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355170520336 + ... + 355170520341.

It is an arithmetic number, because the mean of its divisors is an integer number (710341040678).

Almost surely, 2^{2131023122031} is an apocalyptic number.

2131023122031 is a deficient number, since it is larger than the sum of its proper divisors (710341040681).

2131023122031 is an equidigital number, since it uses as much as digits as its factorization.

2131023122031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710341040680.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 2131023122031 its reverse (1302213201312), we get a palindrome (3433236323343).

The spelling of 2131023122031 in words is "two trillion, one hundred thirty-one billion, twenty-three million, one hundred twenty-two thousand, thirty-one".