11858131 has 2 divisors, whose sum is σ = 11858132. Its totient is φ = 11858130.

The previous prime is 11858101. The next prime is 11858149. The reversal of 11858131 is 13185811.

11858131 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 not a de Polignac number, because 11858131 - 2¹⁹ = 11333843 is a prime.

It is a super-2 number, since 2×11858131² = 281230541626322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11858131.

It is not a weakly prime, because it can be changed into another prime (11858101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5929065 + 5929066.

It is an arithmetic number, because the mean of its divisors is an integer number (5929066).

Almost surely, 2^11858131 is an apocalyptic number.

11858131 is a deficient number, since it is larger than the sum of its proper divisors (1).

11858131 is an equidigital number, since it uses as much as digits as its factorization.

11858131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 960, while the sum is 28.

The square root of 11858131 is about 3443.5637063949. The cubic root of 11858131 is about 228.0370502527.

It can be divided in two parts, 1185 and 8131, that added together give a triangular number (9316 = T₁₃₆).

The spelling of 11858131 in words is "eleven million, eight hundred fifty-eight thousand, one hundred thirty-one".