31032012321121 has 16 divisors (see below), whose sum is σ = 36073840931968. Its totient is φ = 26143014902400.

The previous prime is 31032012321097. The next prime is 31032012321157. The reversal of 31032012321121 is 12112321023013.

It is a cyclic number.

It is not a de Polignac number, because 31032012321121 - 2³⁷ = 30894573367649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31032012321092 and 31032012321101.

It is not an unprimeable number, because it can be changed into a prime (31032012321421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26943315 + ... + 28071448.

It is an arithmetic number, because the mean of its divisors is an integer number (2254615058248).

Almost surely, 2^{31032012321121} is an apocalyptic number.

It is an amenable number.

31032012321121 is a deficient number, since it is larger than the sum of its proper divisors (5041828610847).

31032012321121 is a wasteful number, since it uses less digits than its factorization.

31032012321121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55016152.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 31032012321121 its reverse (12112321023013), we get a palindrome (43144333344134).

The spelling of 31032012321121 in words is "thirty-one trillion, thirty-two billion, twelve million, three hundred twenty-one thousand, one hundred twenty-one".