31100023000121 has 32 divisors (see below), whose sum is σ = 32622888493056. Its totient is φ = 29610781200000.

The previous prime is 31100023000097. The next prime is 31100023000147. The reversal of 31100023000121 is 12100032000113.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31100023000121 is a prime.

It is a super-2 number, since 2×31100023000121² (a number of 28 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 = 31100023000096 and 31100023000105.

It is not an unprimeable number, because it can be changed into a prime (31100023000621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9566292746 + ... + 9566295996.

It is an arithmetic number, because the mean of its divisors is an integer number (1019465265408).

Almost surely, 2^{31100023000121} is an apocalyptic number.

31100023000121 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

31100023000121 is a deficient number, since it is larger than the sum of its proper divisors (1522865492935).

31100023000121 is a wasteful number, since it uses less digits than its factorization.

31100023000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7653.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 31100023000121 its reverse (12100032000113), we get a palindrome (43200055000234).

The spelling of 31100023000121 in words is "thirty-one trillion, one hundred billion, twenty-three million, one hundred twenty-one", and thus it is an aban number.