2131110031321 has 16 divisors (see below), whose sum is σ = 2257179724800. Its totient is φ = 2006467605648.

The previous prime is 2131110031291. The next prime is 2131110031331. The reversal of 2131110031321 is 1231300111312.

It is not a de Polignac number, because 2131110031321 - 2⁵ = 2131110031289 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131110031331) 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, 1584820 + ... + 2602666.

It is an arithmetic number, because the mean of its divisors is an integer number (141073732800).

Almost surely, 2^{2131110031321} is an apocalyptic number.

It is an amenable number.

2131110031321 is a deficient number, since it is larger than the sum of its proper divisors (126069693479).

2131110031321 is a wasteful number, since it uses less digits than its factorization.

2131110031321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018548.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 2131110031321 its reverse (1231300111312), we get a palindrome (3362410142633).

The spelling of 2131110031321 in words is "two trillion, one hundred thirty-one billion, one hundred ten million, thirty-one thousand, three hundred twenty-one".