23003312136 has 128 divisors (see below), whose sum is σ = 69638952960. Its totient is φ = 6181401600.

The previous prime is 23003312093. The next prime is 23003312147. The reversal of 23003312136 is 63121330032.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 7741131 + ... + 7744101.

It is an arithmetic number, because the mean of its divisors is an integer number (544054320).

Almost surely, 2^23003312136 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 23003312136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34819476480).

23003312136 is an abundant number, since it is smaller than the sum of its proper divisors (46635640824).

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

23003312136 is a wasteful number, since it uses less digits than its factorization.

23003312136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5715 (or 5711 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 23003312136 its reverse (63121330032), we get a palindrome (86124642168).

The spelling of 23003312136 in words is "twenty-three billion, three million, three hundred twelve thousand, one hundred thirty-six".