31013101220121 has 24 divisors (see below), whose sum is σ = 47149209618784. Its totient is φ = 20366812730880.

The previous prime is 31013101220119. The next prime is 31013101220177. The reversal of 31013101220121 is 12102210131013.

31013101220121 is a `hidden beast` number, since 3 + 10 + 1 + 310 + 1 + 220 + 121 = 666.

It is not a de Polignac number, because 31013101220121 - 2¹ = 31013101220119 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31013101220094 and 31013101220103.

It is not an unprimeable number, because it can be changed into a prime (31013101220921) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 952416040 + ... + 952448601.

Almost surely, 2^{31013101220121} is an apocalyptic number.

It is an amenable number.

31013101220121 is a deficient number, since it is larger than the sum of its proper divisors (16136108398663).

31013101220121 is an equidigital number, since it uses as much as digits as its factorization.

31013101220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1904864723 (or 1904864711 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 31013101220121 its reverse (12102210131013), we get a palindrome (43115311351134).

The spelling of 31013101220121 in words is "thirty-one trillion, thirteen billion, one hundred one million, two hundred twenty thousand, one hundred twenty-one".