31013101123121 has 8 divisors (see below), whose sum is σ = 33446368696104. Its totient is φ = 28586639894400.

The previous prime is 31013101123093. The next prime is 31013101123181. The reversal of 31013101123121 is 12132110131013.

It can be written as a sum of positive squares in 4 ways, for example, as 15302460890896 + 15710640232225 = 3911836^2 + 3963665^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31013101123121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31013101123093 and 31013101123102.

It is not an unprimeable number, because it can be changed into a prime (31013101123181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1701576596 + ... + 1701594821.

It is an arithmetic number, because the mean of its divisors is an integer number (4180796087013).

Almost surely, 2^{31013101123121} is an apocalyptic number.

It is an amenable number.

31013101123121 is a deficient number, since it is larger than the sum of its proper divisors (2433267572983).

31013101123121 is a wasteful number, since it uses less digits than its factorization.

31013101123121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3403172131.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 31013101123121 its reverse (12132110131013), we get a palindrome (43145211254134).

The spelling of 31013101123121 in words is "thirty-one trillion, thirteen billion, one hundred one million, one hundred twenty-three thousand, one hundred twenty-one".