12406731 has 8 divisors (see below), whose sum is σ = 16894464. Its totient is φ = 8095080.

The previous prime is 12406721. The next prime is 12406733. The reversal of 12406731 is 13760421.

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

It is not a de Polignac number, because 12406731 - 2¹⁴ = 12390347 is a prime.

It is a super-2 number, since 2×12406731² = 307853948212722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12406733) 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, 43855 + ... + 44136.

It is an arithmetic number, because the mean of its divisors is an integer number (2111808).

Almost surely, 2^12406731 is an apocalyptic number.

12406731 is a deficient number, since it is larger than the sum of its proper divisors (4487733).

12406731 is an equidigital number, since it uses as much as digits as its factorization.

12406731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88041.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 12406731 is about 3522.3189804446. The cubic root of 12406731 is about 231.5007782505.

The spelling of 12406731 in words is "twelve million, four hundred six thousand, seven hundred thirty-one".