131056784 has 10 divisors (see below), whose sum is σ = 253922550. Its totient is φ = 65528384.

The previous prime is 131056769. The next prime is 131056799. The reversal of 131056784 is 487650131.

It is an interprime number because it is at equal distance from previous prime (131056769) and next prime (131056799).

It can be written as a sum of positive squares in only one way, i.e., 130873600 + 183184 = 11440^2 + 428^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4095509 + ... + 4095540.

It is an arithmetic number, because the mean of its divisors is an integer number (25392255).

Almost surely, 2^131056784 is an apocalyptic number.

It is an amenable number.

131056784 is a deficient number, since it is larger than the sum of its proper divisors (122865766).

131056784 is an equidigital number, since it uses as much as digits as its factorization.

131056784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8191057 (or 8191051 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 131056784 is about 11448.0034940596. The cubic root of 131056784 is about 507.9486793796.

The spelling of 131056784 in words is "one hundred thirty-one million, fifty-six thousand, seven hundred eighty-four".