23031130 has 16 divisors (see below), whose sum is σ = 41532264. Its totient is φ = 9195520.

The previous prime is 23031121. The next prime is 23031157. The reversal of 23031130 is 3113032.

It can be written as a sum of positive squares in 4 ways, for example, as 20711601 + 2319529 = 4551^2 + 1523^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 23031130.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4614 + ... + 8206.

Almost surely, 2^23031130 is an apocalyptic number.

23031130 is a deficient number, since it is larger than the sum of its proper divisors (18501134).

23031130 is a wasteful number, since it uses less digits than its factorization.

23031130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4241.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 23031130 is about 4799.0759527226. The cubic root of 23031130 is about 284.5149438810.

Adding to 23031130 its reverse (3113032), we get a palindrome (26144162).

The spelling of 23031130 in words is "twenty-three million, thirty-one thousand, one hundred thirty".