655130431 has 8 divisors (see below), whose sum is σ = 706431600. Its totient is φ = 605511360.

The previous prime is 655130417. The next prime is 655130449. The reversal of 655130431 is 134031556.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-655130431 is a prime.

It is a super-2 number, since 2×655130431² = 858391763244491522, 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 655130431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655130461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 419716 + ... + 421273.

It is an arithmetic number, because the mean of its divisors is an integer number (88303950).

Almost surely, 2^655130431 is an apocalyptic number.

655130431 is a deficient number, since it is larger than the sum of its proper divisors (51301169).

655130431 is a wasteful number, since it uses less digits than its factorization.

655130431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841049.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 655130431 is about 25595.5158377400. The cubic root of 655130431 is about 868.5122019403.

Adding to 655130431 its reverse (134031556), we get a palindrome (789161987).

The spelling of 655130431 in words is "six hundred fifty-five million, one hundred thirty thousand, four hundred thirty-one".