31133122312123 has 32 divisors (see below), whose sum is σ = 34822512893952. Its totient is φ = 27640554480000.

The previous prime is 31133122312079. The next prime is 31133122312141. The reversal of 31133122312123 is 32121322133113.

It is a cyclic number.

It is not a de Polignac number, because 31133122312123 - 2²¹ = 31133120214971 is a prime.

It is a super-2 number, since 2×31133122312123² (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 = 31133122312091 and 31133122312100.

It is not an unprimeable number, because it can be changed into a prime (31133122310123) 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, 46501461 + ... + 47166217.

It is an arithmetic number, because the mean of its divisors is an integer number (1088203527936).

Almost surely, 2^{31133122312123} is an apocalyptic number.

31133122312123 is a deficient number, since it is larger than the sum of its proper divisors (3689390581829).

31133122312123 is a wasteful number, since it uses less digits than its factorization.

31133122312123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665515.

The product of its digits is 3888, while the sum is 28.

Adding to 31133122312123 its reverse (32121322133113), we get a palindrome (63254444445236).

The spelling of 31133122312123 in words is "thirty-one trillion, one hundred thirty-three billion, one hundred twenty-two million, three hundred twelve thousand, one hundred twenty-three".