23131170 has 112 divisors (see below), whose sum is σ = 66104640. Its totient is φ = 5808672.

The previous prime is 23131111. The next prime is 23131181. The reversal of 23131170 is 7113132.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 138427 + ... + 138593.

It is an arithmetic number, because the mean of its divisors is an integer number (590220).

Almost surely, 2^23131170 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23131170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33052320).

23131170 is an abundant number, since it is smaller than the sum of its proper divisors (42973470).

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

23131170 is a wasteful number, since it uses less digits than its factorization.

23131170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 18.

The square root of 23131170 is about 4809.4874986842. The cubic root of 23131170 is about 284.9262967309.

The spelling of 23131170 in words is "twenty-three million, one hundred thirty-one thousand, one hundred seventy".