31302121032123 has 32 divisors (see below), whose sum is σ = 42089086771200. Its totient is φ = 20692334887200.

The previous prime is 31302121032103. The next prime is 31302121032131. The reversal of 31302121032123 is 32123012120313.

It is not a de Polignac number, because 31302121032123 - 2⁶ = 31302121032059 is a prime.

It is a super-2 number, since 2×31302121032123² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31302121032093 and 31302121032102.

It is not an unprimeable number, because it can be changed into a prime (31302121032103) 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, 446889138 + ... + 446959176.

It is an arithmetic number, because the mean of its divisors is an integer number (1315283961600).

Almost surely, 2^{31302121032123} is an apocalyptic number.

31302121032123 is a deficient number, since it is larger than the sum of its proper divisors (10786965739077).

31302121032123 is a wasteful number, since it uses less digits than its factorization.

31302121032123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72583.

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

Adding to 31302121032123 its reverse (32123012120313), we get a palindrome (63425133152436).

The spelling of 31302121032123 in words is "thirty-one trillion, three hundred two billion, one hundred twenty-one million, thirty-two thousand, one hundred twenty-three".