131139045 has 24 divisors (see below), whose sum is σ = 239272800. Its totient is φ = 66259296.

The previous prime is 131139011. The next prime is 131139049. The reversal of 131139045 is 540931131.

It is not a de Polignac number, because 131139045 - 2¹⁴ = 131122661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131139049) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75835 + ... + 77544.

It is an arithmetic number, because the mean of its divisors is an integer number (9969700).

Almost surely, 2^131139045 is an apocalyptic number.

131139045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131139045 is a deficient number, since it is larger than the sum of its proper divisors (108133755).

131139045 is a wasteful number, since it uses less digits than its factorization.

131139045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153409 (or 153406 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 131139045 is about 11451.5957403324. The cubic root of 131139045 is about 508.0549326279.

The spelling of 131139045 in words is "one hundred thirty-one million, one hundred thirty-nine thousand, forty-five".