23491113380 has 48 divisors (see below), whose sum is σ = 56724608640. Its totient is φ = 8004676608.

The previous prime is 23491113379. The next prime is 23491113389. The reversal of 23491113380 is 8331119432.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 23491113380.

It is not an unprimeable number, because it can be changed into a prime (23491113389) 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, 491885 + ... + 537524.

It is an arithmetic number, because the mean of its divisors is an integer number (1181762680).

Almost surely, 2^23491113380 is an apocalyptic number.

23491113380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23491113380 is an abundant number, since it is smaller than the sum of its proper divisors (33233495260).

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

23491113380 is a wasteful number, since it uses less digits than its factorization.

23491113380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029588 (or 1029586 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The spelling of 23491113380 in words is "twenty-three billion, four hundred ninety-one million, one hundred thirteen thousand, three hundred eighty".