23131982784 has 112 divisors (see below), whose sum is σ = 62754581120. Its totient is φ = 7515970560.

The previous prime is 23131982779. The next prime is 23131982831. The reversal of 23131982784 is 48728913132.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4463907 + ... + 4469085.

It is an arithmetic number, because the mean of its divisors is an integer number (560308760).

Almost surely, 2^23131982784 is an apocalyptic number.

23131982784 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23131982784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31377290560).

23131982784 is an abundant number, since it is smaller than the sum of its proper divisors (39622598336).

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

23131982784 is a wasteful number, since it uses less digits than its factorization.

23131982784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5778 (or 5768 counting only the distinct ones).

The product of its digits is 580608, while the sum is 48.

The spelling of 23131982784 in words is "twenty-three billion, one hundred thirty-one million, nine hundred eighty-two thousand, seven hundred eighty-four".