131228694 has 32 divisors (see below), whose sum is σ = 294518880. Its totient is φ = 43308000.

The previous prime is 131228663. The next prime is 131228701. The reversal of 131228694 is 496822131.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 6577 + ... + 17484.

It is an arithmetic number, because the mean of its divisors is an integer number (9203715).

Almost surely, 2^131228694 is an apocalyptic number.

131228694 is an abundant number, since it is smaller than the sum of its proper divisors (163290186).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131228694 is a wasteful number, since it uses less digits than its factorization.

131228694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24173 (or 24167 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 131228694 is about 11455.5093295759. The cubic root of 131228694 is about 508.1706780739.

The spelling of 131228694 in words is "one hundred thirty-one million, two hundred twenty-eight thousand, six hundred ninety-four".