655131007 has 4 divisors (see below), whose sum is σ = 655223800. Its totient is φ = 655038216.

The previous prime is 655130977. The next prime is 655131017. The reversal of 655131007 is 700131556.

655131007 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-655131007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655131017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34848 + ... + 50245.

It is an arithmetic number, because the mean of its divisors is an integer number (163805950).

Almost surely, 2^655131007 is an apocalyptic number.

655131007 is a deficient number, since it is larger than the sum of its proper divisors (92793).

655131007 is an equidigital number, since it uses as much as digits as its factorization.

655131007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92792.

The product of its (nonzero) digits is 3150, while the sum is 28.

The square root of 655131007 is about 25595.5270897085. The cubic root of 655131007 is about 868.5124564763.

The spelling of 655131007 in words is "six hundred fifty-five million, one hundred thirty-one thousand, seven".