23131331010 has 96 divisors (see below), whose sum is σ = 64336092912. Its totient is φ = 5745623040.

The previous prime is 23131330973. The next prime is 23131331011. The reversal of 23131331010 is 1013313132.

It is a happy number.

23131331010 is a `hidden beast` number, since 2 + 31 + 313 + 310 + 10 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 19543201209 + 3588129801 = 139797^2 + 59901^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (23131331011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 70480 + ... + 226340.

Almost surely, 2^23131331010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23131331010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32168046456).

23131331010 is an abundant number, since it is smaller than the sum of its proper divisors (41204761902).

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

23131331010 is a wasteful number, since it uses less digits than its factorization.

23131331010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155988 (or 155985 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 23131331010 its reverse (1013313132), we get a palindrome (24144644142).

The spelling of 23131331010 in words is "twenty-three billion, one hundred thirty-one million, three hundred thirty-one thousand, ten".