11678731 has 4 divisors (see below), whose sum is σ = 11794464. Its totient is φ = 11563000.

The previous prime is 11678707. The next prime is 11678743. The reversal of 11678731 is 13787611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13787611 = 101 ⋅136511.

It is a cyclic number.

It is not a de Polignac number, because 11678731 - 2⁵ = 11678699 is a prime.

It is a super-2 number, since 2×11678731² = 272785515540722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11678761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57715 + ... + 57916.

It is an arithmetic number, because the mean of its divisors is an integer number (2948616).

Almost surely, 2^11678731 is an apocalyptic number.

11678731 is a deficient number, since it is larger than the sum of its proper divisors (115733).

11678731 is a wasteful number, since it uses less digits than its factorization.

11678731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115732.

The product of its digits is 7056, while the sum is 34.

The square root of 11678731 is about 3417.4158365642. The cubic root of 11678731 is about 226.8812215381.

The spelling of 11678731 in words is "eleven million, six hundred seventy-eight thousand, seven hundred thirty-one".