131122439 has 16 divisors (see below), whose sum is σ = 158484480. Its totient is φ = 105973920.

The previous prime is 131122429. The next prime is 131122457. The reversal of 131122439 is 934221131.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131122439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131122429) 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 in 15 ways as a sum of consecutive naturals, for example, 27449 + ... + 31869.

It is an arithmetic number, because the mean of its divisors is an integer number (9905280).

Almost surely, 2^131122439 is an apocalyptic number.

131122439 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

131122439 is a deficient number, since it is larger than the sum of its proper divisors (27362041).

131122439 is a wasteful number, since it uses less digits than its factorization.

131122439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4670.

The product of its digits is 1296, while the sum is 26.

The square root of 131122439 is about 11450.8706655870. The cubic root of 131122439 is about 508.0334869012.

It can be divided in two parts, 13112 and 2439, that added together give a palindrome (15551).

The spelling of 131122439 in words is "one hundred thirty-one million, one hundred twenty-two thousand, four hundred thirty-nine".