11839931 has 2 divisors, whose sum is σ = 11839932. Its totient is φ = 11839930.

The previous prime is 11839913. The next prime is 11839957. The reversal of 11839931 is 13993811.

Together with previous prime (11839913) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11839931 - 2¹⁰ = 11838907 is a prime.

It is a super-2 number, since 2×11839931² = 280367932169522, 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 = 11839891 and 11839900.

It is not a weakly prime, because it can be changed into another prime (11839901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5919965 + 5919966.

It is an arithmetic number, because the mean of its divisors is an integer number (5919966).

Almost surely, 2^11839931 is an apocalyptic number.

11839931 is a deficient number, since it is larger than the sum of its proper divisors (1).

11839931 is an equidigital number, since it uses as much as digits as its factorization.

11839931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 35.

The square root of 11839931 is about 3440.9200804436. The cubic root of 11839931 is about 227.9203258598.

The spelling of 11839931 in words is "eleven million, eight hundred thirty-nine thousand, nine hundred thirty-one".