11857331 has 2 divisors, whose sum is σ = 11857332. Its totient is φ = 11857330.

The previous prime is 11857327. The next prime is 11857333. The reversal of 11857331 is 13375811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11857331 - 2² = 11857327 is a prime.

It is a super-2 number, since 2×11857331² = 281192596887122, which contains 22 as substring.

Together with 11857333, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 11857294 and 11857303.

It is not a weakly prime, because it can be changed into another prime (11857333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5928665 + 5928666.

It is an arithmetic number, because the mean of its divisors is an integer number (5928666).

Almost surely, 2^11857331 is an apocalyptic number.

11857331 is a deficient number, since it is larger than the sum of its proper divisors (1).

11857331 is an equidigital number, since it uses as much as digits as its factorization.

11857331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 29.

The square root of 11857331 is about 3443.4475457018. The cubic root of 11857331 is about 228.0319220206.

It can be divided in two parts, 118573 and 31, that multiplied together give a palindrome (3675763).

The spelling of 11857331 in words is "eleven million, eight hundred fifty-seven thousand, three hundred thirty-one".