131577907 has 4 divisors (see below), whose sum is σ = 138503080. Its totient is φ = 124652736.

The previous prime is 131577833. The next prime is 131577911. The reversal of 131577907 is 709775131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131577907 - 2¹¹ = 131575859 is a prime.

It is a super-2 number, since 2×131577907² = 34625491221001298, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131577907.

It is not an unprimeable number, because it can be changed into a prime (131577937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3462558 + ... + 3462595.

It is an arithmetic number, because the mean of its divisors is an integer number (34625770).

Almost surely, 2^131577907 is an apocalyptic number.

131577907 is a deficient number, since it is larger than the sum of its proper divisors (6925173).

131577907 is an equidigital number, since it uses as much as digits as its factorization.

131577907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6925172.

The product of its (nonzero) digits is 46305, while the sum is 40.

The square root of 131577907 is about 11470.7413448303. The cubic root of 131577907 is about 508.6210435669.

The spelling of 131577907 in words is "one hundred thirty-one million, five hundred seventy-seven thousand, nine hundred seven".