202312210031 has 16 divisors (see below), whose sum is σ = 210707291520. Its totient is φ = 194090638560.

The previous prime is 202312210021. The next prime is 202312210043. The reversal of 202312210031 is 130012213202.

It is a de Polignac number, because none of the positive numbers 2^k-202312210031 is a prime.

It is a super-2 number, since 2×202312210031² (a number of 23 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 = 202312209991 and 202312210009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202312210021) 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, 2962436 + ... + 3029958.

It is an arithmetic number, because the mean of its divisors is an integer number (13169205720).

Almost surely, 2^202312210031 is an apocalyptic number.

202312210031 is a deficient number, since it is larger than the sum of its proper divisors (8395081489).

202312210031 is a wasteful number, since it uses less digits than its factorization.

202312210031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68806.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 202312210031 its reverse (130012213202), we get a palindrome (332324423233).

The spelling of 202312210031 in words is "two hundred two billion, three hundred twelve million, two hundred ten thousand, thirty-one".