11680731 has 12 divisors (see below), whose sum is σ = 16910400. Its totient is φ = 7769520.

The previous prime is 11680727. The next prime is 11680733. The reversal of 11680731 is 13708611.

It is not a de Polignac number, because 11680731 - 2² = 11680727 is a prime.

It is a super-2 number, since 2×11680731² = 272878953388722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11680695 and 11680704.

It is not an unprimeable number, because it can be changed into a prime (11680733) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3670 + ... + 6068.

It is an arithmetic number, because the mean of its divisors is an integer number (1409200).

Almost surely, 2^11680731 is an apocalyptic number.

11680731 is a deficient number, since it is larger than the sum of its proper divisors (5229669).

11680731 is a wasteful number, since it uses less digits than its factorization.

11680731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2946 (or 2943 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 11680731 is about 3417.7084428020. The cubic root of 11680731 is about 226.8941720474.

The spelling of 11680731 in words is "eleven million, six hundred eighty thousand, seven hundred thirty-one".