23131113330 has 64 divisors (see below), whose sum is σ = 60023472768. Its totient is φ = 5671104000.

The previous prime is 23131113307. The next prime is 23131113407. The reversal of 23131113330 is 3331113132.

It is a junction number, because it is equal to n+sod(n) for n = 23131113297 and 23131113306.

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, 20259 + ... + 216038.

It is an arithmetic number, because the mean of its divisors is an integer number (937866762).

Almost surely, 2^23131113330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23131113330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30011736384).

23131113330 is an abundant number, since it is smaller than the sum of its proper divisors (36892359438).

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

23131113330 is a wasteful number, since it uses less digits than its factorization.

23131113330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236571.

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 23131113330 its reverse (3331113132), we get a palindrome (26462226462).

The spelling of 23131113330 in words is "twenty-three billion, one hundred thirty-one million, one hundred thirteen thousand, three hundred thirty".