23785131 has 8 divisors (see below), whose sum is σ = 33382720. Its totient is φ = 15022152.

The previous prime is 23785121. The next prime is 23785163. The reversal of 23785131 is 13158732.

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

It is not a de Polignac number, because 23785131 - 2⁹ = 23784619 is a prime.

It is a super-2 number, since 2×23785131² = 1131464913374322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23785121) 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, 208585 + ... + 208698.

It is an arithmetic number, because the mean of its divisors is an integer number (4172840).

Almost surely, 2^23785131 is an apocalyptic number.

23785131 is a deficient number, since it is larger than the sum of its proper divisors (9597589).

23785131 is a wasteful number, since it uses less digits than its factorization.

23785131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417305.

The product of its digits is 5040, while the sum is 30.

The square root of 23785131 is about 4877.0002050441. Note that the first 3 decimals coincide. The cubic root of 23785131 is about 287.5865135985.

The spelling of 23785131 in words is "twenty-three million, seven hundred eighty-five thousand, one hundred thirty-one".