12057831 has 6 divisors (see below), whose sum is σ = 17416880. Its totient is φ = 8038548.

The previous prime is 12057821. The next prime is 12057839. The reversal of 12057831 is 13875021.

It is not a de Polignac number, because 12057831 - 2⁶ = 12057767 is a prime.

It is a super-2 number, since 2×12057831² = 290782576849122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12057795 and 12057804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12057839) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 669871 + ... + 669888.

Almost surely, 2^12057831 is an apocalyptic number.

12057831 is a deficient number, since it is larger than the sum of its proper divisors (5359049).

12057831 is a wasteful number, since it uses less digits than its factorization.

12057831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1339765 (or 1339762 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 12057831 is about 3472.4387683586. The cubic root of 12057831 is about 229.3100368909.

The spelling of 12057831 in words is "twelve million, fifty-seven thousand, eight hundred thirty-one".