12057731 has 8 divisors (see below), whose sum is σ = 14116704. Its totient is φ = 10082880.

The previous prime is 12057713. The next prime is 12057737. The reversal of 12057731 is 13775021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12057731 is a prime.

It is a super-2 number, since 2×12057731² = 290777753736722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12057731.

It is not an unprimeable number, because it can be changed into a prime (12057737) 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, 20720 + ... + 21293.

It is an arithmetic number, because the mean of its divisors is an integer number (1764588).

Almost surely, 2^12057731 is an apocalyptic number.

12057731 is a deficient number, since it is larger than the sum of its proper divisors (2058973).

12057731 is an equidigital number, since it uses as much as digits as its factorization.

12057731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42061.

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 12057731 is about 3472.4243692268. The cubic root of 12057731 is about 229.3094029718.

The spelling of 12057731 in words is "twelve million, fifty-seven thousand, seven hundred thirty-one".