2031122320311 has 16 divisors (see below), whose sum is σ = 3095831404800. Its totient is φ = 1160345875008.

The previous prime is 2031122320303. The next prime is 2031122320313. The reversal of 2031122320311 is 1130232211302.

It is not a de Polignac number, because 2031122320311 - 2³ = 2031122320303 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031122320313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12225981 + ... + 12390998.

It is an arithmetic number, because the mean of its divisors is an integer number (193489462800).

Almost surely, 2^{2031122320311} is an apocalyptic number.

2031122320311 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2031122320311 is a deficient number, since it is larger than the sum of its proper divisors (1064709084489).

2031122320311 is a wasteful number, since it uses less digits than its factorization.

2031122320311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24620918.

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

Adding to 2031122320311 its reverse (1130232211302), we get a palindrome (3161354531613).

The spelling of 2031122320311 in words is "two trillion, thirty-one billion, one hundred twenty-two million, three hundred twenty thousand, three hundred eleven".