131306777 has 16 divisors (see below), whose sum is σ = 158745600. Its totient is φ = 106097040.

The previous prime is 131306753. The next prime is 131306783. The reversal of 131306777 is 777603131.

It is a happy number.

It is not a de Polignac number, because 131306777 - 2¹² = 131302681 is a prime.

It is a super-2 number, since 2×131306777² = 34482939372255458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131306737) 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, 25724 + ... + 30402.

It is an arithmetic number, because the mean of its divisors is an integer number (9921600).

Almost surely, 2^131306777 is an apocalyptic number.

It is an amenable number.

131306777 is a deficient number, since it is larger than the sum of its proper divisors (27438823).

131306777 is a wasteful number, since it uses less digits than its factorization.

131306777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4916.

The product of its (nonzero) digits is 18522, while the sum is 35.

The square root of 131306777 is about 11458.9169208961. The cubic root of 131306777 is about 508.2714477620.

The spelling of 131306777 in words is "one hundred thirty-one million, three hundred six thousand, seven hundred seventy-seven".