23142357 has 36 divisors (see below), whose sum is σ = 39358956. Its totient is φ = 13063680.

The previous prime is 23142341. The next prime is 23142367. The reversal of 23142357 is 75324132.

23142357 is a `hidden beast` number, since 231 + 423 + 5 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9790641 + 13351716 = 3129^2 + 3654^2 .

It is not a de Polignac number, because 23142357 - 2⁴ = 23142341 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23142357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23142367) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 42507 + ... + 43047.

Almost surely, 2^23142357 is an apocalyptic number.

It is an amenable number.

23142357 is a deficient number, since it is larger than the sum of its proper divisors (16216599).

23142357 is a wasteful number, since it uses less digits than its factorization.

23142357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658 (or 648 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 23142357 is about 4810.6503718312. The cubic root of 23142357 is about 284.9722225929.

Adding to 23142357 its reverse (75324132), we get a palindrome (98466489).

The spelling of 23142357 in words is "twenty-three million, one hundred forty-two thousand, three hundred fifty-seven".