12531761 has 8 divisors (see below), whose sum is σ = 13742784. Its totient is φ = 11332720.

The previous prime is 12531709. The next prime is 12531763. The reversal of 12531761 is 16713521.

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

It is a cyclic number.

It is not a de Polignac number, because 12531761 - 2²² = 8337457 is a prime.

It is a super-2 number, since 2×12531761² = 314090067522242, 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 12531761.

It is not an unprimeable number, because it can be changed into a prime (12531763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 725 + ... + 5058.

It is an arithmetic number, because the mean of its divisors is an integer number (1717848).

Almost surely, 2^12531761 is an apocalyptic number.

12531761 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12531761 is a deficient number, since it is larger than the sum of its proper divisors (1211023).

12531761 is a wasteful number, since it uses less digits than its factorization.

12531761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5991.

The product of its digits is 1260, while the sum is 26.

The square root of 12531761 is about 3540.0227400400. The cubic root of 12531761 is about 232.2758374390.

The spelling of 12531761 in words is "twelve million, five hundred thirty-one thousand, seven hundred sixty-one".