23130229987 has 4 divisors (see below), whose sum is σ = 23755371376. Its totient is φ = 22505088600.

The previous prime is 23130229961. The next prime is 23130229999. The reversal of 23130229987 is 78992203132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23130229987 - 2³¹ = 20982746339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23130229387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312570639 + ... + 312570712.

It is an arithmetic number, because the mean of its divisors is an integer number (5938842844).

Almost surely, 2^23130229987 is an apocalyptic number.

23130229987 is a deficient number, since it is larger than the sum of its proper divisors (625141389).

23130229987 is an equidigital number, since it uses as much as digits as its factorization.

23130229987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625141388.

The product of its (nonzero) digits is 326592, while the sum is 46.

The spelling of 23130229987 in words is "twenty-three billion, one hundred thirty million, two hundred twenty-nine thousand, nine hundred eighty-seven".