31312101231123 has 16 divisors (see below), whose sum is σ = 43648280027136. Its totient is φ = 19928812354880.

The previous prime is 31312101231113. The next prime is 31312101231133. The reversal of 31312101231123 is 32113210121313.

It is an interprime number because it is at equal distance from previous prime (31312101231113) and next prime (31312101231133).

It is a cyclic number.

It is not a de Polignac number, because 31312101231123 - 2⁵ = 31312101231091 is a prime.

It is a super-2 number, since 2×31312101231123² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31312101231093 and 31312101231102.

It is not an unprimeable number, because it can be changed into a prime (31312101231113) 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, 435471315 + ... + 435543212.

It is an arithmetic number, because the mean of its divisors is an integer number (2728017501696).

Almost surely, 2^{31312101231123} is an apocalyptic number.

31312101231123 is a deficient number, since it is larger than the sum of its proper divisors (12336178796013).

31312101231123 is a wasteful number, since it uses less digits than its factorization.

31312101231123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871015074.

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 31312101231123 its reverse (32113210121313), we get a palindrome (63425311352436).

The spelling of 31312101231123 in words is "thirty-one trillion, three hundred twelve billion, one hundred one million, two hundred thirty-one thousand, one hundred twenty-three".