11916731 has 2 divisors, whose sum is σ = 11916732. Its totient is φ = 11916730.

The previous prime is 11916703. The next prime is 11916757. The reversal of 11916731 is 13761911.

11916731 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11916731 is a prime.

It is a super-2 number, since 2×11916731² = 284016955452722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 11916694 and 11916703.

It is not a weakly prime, because it can be changed into another prime (11916131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5958365 + 5958366.

It is an arithmetic number, because the mean of its divisors is an integer number (5958366).

Almost surely, 2^11916731 is an apocalyptic number.

11916731 is a deficient number, since it is larger than the sum of its proper divisors (1).

11916731 is an equidigital number, since it uses as much as digits as its factorization.

11916731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1134, while the sum is 29.

The square root of 11916731 is about 3452.0618476499. The cubic root of 11916731 is about 228.4120677321.

The spelling of 11916731 in words is "eleven million, nine hundred sixteen thousand, seven hundred thirty-one".