11840731 has 4 divisors (see below), whose sum is σ = 13532272. Its totient is φ = 10149192.

The previous prime is 11840723. The next prime is 11840737. The reversal of 11840731 is 13704811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13704811 = 1033 ⋅13267.

It is a cyclic number.

It is not a de Polignac number, because 11840731 - 2³ = 11840723 is a prime.

It is a super-2 number, since 2×11840731² = 280405821228722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11840696 and 11840705.

It is not an unprimeable number, because it can be changed into a prime (11840737) 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, 845760 + ... + 845773.

It is an arithmetic number, because the mean of its divisors is an integer number (3383068).

Almost surely, 2^11840731 is an apocalyptic number.

11840731 is a deficient number, since it is larger than the sum of its proper divisors (1691541).

11840731 is an equidigital number, since it uses as much as digits as its factorization.

11840731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691540.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 11840731 is about 3441.0363264575. The cubic root of 11840731 is about 227.9254591148.

The spelling of 11840731 in words is "eleven million, eight hundred forty thousand, seven hundred thirty-one".