31023023033121 has 16 divisors (see below), whose sum is σ = 47275487209344. Its totient is φ = 17726575762944.

The previous prime is 31023023033117. The next prime is 31023023033143. The reversal of 31023023033121 is 12133032032013.

It is not a de Polignac number, because 31023023033121 - 2² = 31023023033117 is a prime.

It is a super-2 number, since 2×31023023033121² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31023023033091 and 31023023033100.

It is not an unprimeable number, because it can be changed into a prime (31023023033921) 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 15 ways as a sum of consecutive naturals, for example, 35641840 + ... + 36501873.

It is an arithmetic number, because the mean of its divisors is an integer number (2954717950584).

Almost surely, 2^{31023023033121} is an apocalyptic number.

It is an amenable number.

31023023033121 is a deficient number, since it is larger than the sum of its proper divisors (16252464176223).

31023023033121 is a wasteful number, since it uses less digits than its factorization.

31023023033121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72164200.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 31023023033121 its reverse (12133032032013), we get a palindrome (43156055065134).

The spelling of 31023023033121 in words is "thirty-one trillion, twenty-three billion, twenty-three million, thirty-three thousand, one hundred twenty-one".