23149997 has 8 divisors (see below), whose sum is σ = 24982944. Its totient is φ = 21324528.

The previous prime is 23149969. The next prime is 23150009. The reversal of 23149997 is 79994132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23149997 - 2⁶ = 23149933 is a prime.

It is a super-2 number, since 2×23149997² = 1071844722200018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23149957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5738 + ... + 8900.

It is an arithmetic number, because the mean of its divisors is an integer number (3122868).

Almost surely, 2^23149997 is an apocalyptic number.

It is an amenable number.

23149997 is a deficient number, since it is larger than the sum of its proper divisors (1832947).

23149997 is a wasteful number, since it uses less digits than its factorization.

23149997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3739.

The product of its digits is 122472, while the sum is 44.

The square root of 23149997 is about 4811.4443777311. Note that the first 3 decimals coincide. The cubic root of 23149997 is about 285.0035784921.

The spelling of 23149997 in words is "twenty-three million, one hundred forty-nine thousand, nine hundred ninety-seven".