23987097 has 10 divisors (see below), whose sum is σ = 35832698. Its totient is φ = 15991344.

The previous prime is 23987081. The next prime is 23987129. The reversal of 23987097 is 79078932.

It can be written as a sum of positive squares in only one way, i.e., 17816841 + 6170256 = 4221^2 + 2484^2 .

It is not a de Polignac number, because 23987097 - 2⁴ = 23987081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23987027) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 147988 + ... + 148149.

Almost surely, 2^23987097 is an apocalyptic number.

23987097 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

23987097 is a deficient number, since it is larger than the sum of its proper divisors (11845601).

23987097 is an equidigital number, since it uses as much as digits as its factorization.

23987097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296149 (or 296140 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 23987097 is about 4897.6624015953. The cubic root of 23987097 is about 288.3982121666.

The spelling of 23987097 in words is "twenty-three million, nine hundred eighty-seven thousand, ninety-seven".