212313023031 has 4 divisors (see below), whose sum is σ = 283084030712. Its totient is φ = 141542015352.

The previous prime is 212313023011. The next prime is 212313023033. The reversal of 212313023031 is 130320313212.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 212313023031 - 2¹⁸ = 212312760887 is a prime.

It is a super-2 number, since 2×212313023031² (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 = 212313022989 and 212313023007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212313023033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35385503836 + ... + 35385503841.

It is an arithmetic number, because the mean of its divisors is an integer number (70771007678).

Almost surely, 2^212313023031 is an apocalyptic number.

212313023031 is a deficient number, since it is larger than the sum of its proper divisors (70771007681).

212313023031 is an equidigital number, since it uses as much as digits as its factorization.

212313023031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70771007680.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 212313023031 its reverse (130320313212), we get a palindrome (342633336243).

The spelling of 212313023031 in words is "two hundred twelve billion, three hundred thirteen million, twenty-three thousand, thirty-one".