655731130 has 8 divisors (see below), whose sum is σ = 1180316052. Its totient is φ = 262292448.

The previous prime is 655731119. The next prime is 655731143. The reversal of 655731130 is 31137556.

It can be written as a sum of positive squares in 2 ways, for example, as 643078881 + 12652249 = 25359^2 + 3557^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 655731092 and 655731101.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32786547 + ... + 32786566.

Almost surely, 2^655731130 is an apocalyptic number.

655731130 is a deficient number, since it is larger than the sum of its proper divisors (524584922).

655731130 is a wasteful number, since it uses less digits than its factorization.

655731130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65573120.

The product of its (nonzero) digits is 9450, while the sum is 31.

The square root of 655731130 is about 25607.2476068788. The cubic root of 655731130 is about 868.7775715073. Note that the first 3 decimals are identical.

Adding to 655731130 its reverse (31137556), we get a palindrome (686868686).

The spelling of 655731130 in words is "six hundred fifty-five million, seven hundred thirty-one thousand, one hundred thirty".