31321332002121 has 32 divisors (see below), whose sum is σ = 48892612220928. Its totient is φ = 17461092293760.

The previous prime is 31321332002119. The next prime is 31321332002173. The reversal of 31321332002121 is 12120023312313.

It is not a de Polignac number, because 31321332002121 - 2¹ = 31321332002119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31321332002091 and 31321332002100.

It is not an unprimeable number, because it can be changed into a prime (31321330002121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61624396 + ... + 62130578.

It is an arithmetic number, because the mean of its divisors is an integer number (1527894131904).

Almost surely, 2^{31321332002121} is an apocalyptic number.

It is an amenable number.

31321332002121 is a deficient number, since it is larger than the sum of its proper divisors (17571280218807).

31321332002121 is a wasteful number, since it uses less digits than its factorization.

31321332002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578101.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 31321332002121 its reverse (12120023312313), we get a palindrome (43441355314434).

The spelling of 31321332002121 in words is "thirty-one trillion, three hundred twenty-one billion, three hundred thirty-two million, two thousand, one hundred twenty-one".