12585783231 has 36 divisors (see below), whose sum is σ = 21156344352. Its totient is φ = 7188882624.

The previous prime is 12585783229. The next prime is 12585783251. The reversal of 12585783231 is 13238758521.

12585783231 is a `hidden beast` number, since 1 + 2 + 58 + 578 + 3 + 23 + 1 = 666.

It is not a de Polignac number, because 12585783231 - 2¹ = 12585783229 is a prime.

It is a super-2 number, since 2×12585783231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12585783251) 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, 1469995 + ... + 1478531.

It is an arithmetic number, because the mean of its divisors is an integer number (587676232).

Almost surely, 2^12585783231 is an apocalyptic number.

12585783231 is a deficient number, since it is larger than the sum of its proper divisors (8570561121).

12585783231 is a wasteful number, since it uses less digits than its factorization.

12585783231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11900 (or 11890 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The spelling of 12585783231 in words is "twelve billion, five hundred eighty-five million, seven hundred eighty-three thousand, two hundred thirty-one".