23130011156 has 18 divisors (see below), whose sum is σ = 47086094538. Its totient is φ = 9912861840.

The previous prime is 23130011153. The next prime is 23130011273. The reversal of 23130011156 is 65111003132.

It can be written as a sum of positive squares in only one way, i.e., 16970272900 + 6159738256 = 130270^2 + 78484^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23130011153) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59004935 + ... + 59005326.

It is an arithmetic number, because the mean of its divisors is an integer number (2615894141).

Almost surely, 2^23130011156 is an apocalyptic number.

It is an amenable number.

23130011156 is an abundant number, since it is smaller than the sum of its proper divisors (23956083382).

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

23130011156 is a wasteful number, since it uses less digits than its factorization.

23130011156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118010279 (or 118010270 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

Adding to 23130011156 its reverse (65111003132), we get a palindrome (88241014288).

The spelling of 23130011156 in words is "twenty-three billion, one hundred thirty million, eleven thousand, one hundred fifty-six".