2321220131031 has 32 divisors (see below), whose sum is σ = 3143676390400. Its totient is φ = 1523316098304.

The previous prime is 2321220130997. The next prime is 2321220131089. The reversal of 2321220131031 is 1301310221232.

It is not a de Polignac number, because 2321220131031 - 2¹⁹ = 2321219606743 is a prime.

It is a super-2 number, since 2×2321220131031² (a number of 26 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 = 2321220130989 and 2321220131007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321220131831) 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 31 ways as a sum of consecutive naturals, for example, 67192395 + ... + 67226931.

It is an arithmetic number, because the mean of its divisors is an integer number (98239887200).

Almost surely, 2^{2321220131031} is an apocalyptic number.

2321220131031 is a deficient number, since it is larger than the sum of its proper divisors (822456259369).

2321220131031 is a wasteful number, since it uses less digits than its factorization.

2321220131031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35935.

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

Adding to 2321220131031 its reverse (1301310221232), we get a palindrome (3622530352263).

The spelling of 2321220131031 in words is "two trillion, three hundred twenty-one billion, two hundred twenty million, one hundred thirty-one thousand, thirty-one".