23303431320 has 128 divisors (see below), whose sum is σ = 76064667840. Its totient is φ = 5677056000.

The previous prime is 23303431303. The next prime is 23303431337. The reversal of 23303431320 is 2313430332.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (23303431303) and next prime (23303431337).

It is a super-2 number, since 2×23303431320² (a number of 22 digits) contains 22 as substring.

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

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, 74320 + ... + 228320.

Almost surely, 2^23303431320 is an apocalyptic number.

23303431320 is a gapful number since it is divisible by the number (20) 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 23303431320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38032333920).

23303431320 is an abundant number, since it is smaller than the sum of its proper divisors (52761236520).

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

23303431320 is a wasteful number, since it uses less digits than its factorization.

23303431320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154125 (or 154121 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 24.

Adding to 23303431320 its reverse (2313430332), we get a palindrome (25616861652).

The spelling of 23303431320 in words is "twenty-three billion, three hundred three million, four hundred thirty-one thousand, three hundred twenty".