3131230023121 has 8 divisors (see below), whose sum is σ = 3202169737320. Its totient is φ = 3060729564672.

The previous prime is 3131230023079. The next prime is 3131230023127. The reversal of 3131230023121 is 1213200321313.

It can be written as a sum of positive squares in 4 ways, for example, as 47834501521 + 3083395521600 = 218711^2 + 1755960^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3131230023121 - 2¹⁵ = 3131229990353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3131230023092 and 3131230023101.

It is not an unprimeable number, because it can be changed into a prime (3131230023127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109799520 + ... + 109828033.

It is an arithmetic number, because the mean of its divisors is an integer number (400271217165).

Almost surely, 2^{3131230023121} is an apocalyptic number.

It is an amenable number.

3131230023121 is a deficient number, since it is larger than the sum of its proper divisors (70939714199).

3131230023121 is a wasteful number, since it uses less digits than its factorization.

3131230023121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219627875.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 3131230023121 its reverse (1213200321313), we get a palindrome (4344430344434).

The spelling of 3131230023121 in words is "three trillion, one hundred thirty-one billion, two hundred thirty million, twenty-three thousand, one hundred twenty-one".