131780757 has 16 divisors (see below), whose sum is σ = 179504640. Its totient is φ = 85974000.

The previous prime is 131780743. The next prime is 131780771. The reversal of 131780757 is 757087131.

It is an interprime number because it is at equal distance from previous prime (131780743) and next prime (131780771).

It is not a de Polignac number, because 131780757 - 2¹⁵ = 131747989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131780707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27382 + ... + 31832.

It is an arithmetic number, because the mean of its divisors is an integer number (11219040).

Almost surely, 2^131780757 is an apocalyptic number.

It is an amenable number.

131780757 is a deficient number, since it is larger than the sum of its proper divisors (47723883).

131780757 is a wasteful number, since it uses less digits than its factorization.

131780757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4664.

The product of its (nonzero) digits is 41160, while the sum is 39.

The square root of 131780757 is about 11479.5800010279. The cubic root of 131780757 is about 508.8822850026.

The spelling of 131780757 in words is "one hundred thirty-one million, seven hundred eighty thousand, seven hundred fifty-seven".