23012212031004 has 96 divisors (see below), whose sum is σ = 61687200669696. Its totient is φ = 6540496220160.

The previous prime is 23012212030949. The next prime is 23012212031027. The reversal of 23012212031004 is 40013021221032.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 497312389 + ... + 497358659.

It is an arithmetic number, because the mean of its divisors is an integer number (642575006976).

Almost surely, 2^{23012212031004} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23012212031004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30843600334848).

23012212031004 is an abundant number, since it is smaller than the sum of its proper divisors (38674988638692).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23012212031004 is a wasteful number, since it uses less digits than its factorization.

23012212031004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77155 (or 77153 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 23012212031004 its reverse (40013021221032), we get a palindrome (63025233252036).

The spelling of 23012212031004 in words is "twenty-three trillion, twelve billion, two hundred twelve million, thirty-one thousand, four".