130231306 has 4 divisors (see below), whose sum is σ = 195346962. Its totient is φ = 65115652.

The previous prime is 130231289. The next prime is 130231307. The reversal of 130231306 is 603132031.

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

It can be written as a sum of positive squares in only one way, i.e., 70308225 + 59923081 = 8385^2 + 7741^2 .

It is not an unprimeable number, because it can be changed into a prime (130231307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32557825 + ... + 32557828.

Almost surely, 2^130231306 is an apocalyptic number.

130231306 is a deficient number, since it is larger than the sum of its proper divisors (65115656).

130231306 is an equidigital number, since it uses as much as digits as its factorization.

130231306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65115655.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 130231306 is about 11411.8931821149. The cubic root of 130231306 is about 506.8799724167.

Adding to 130231306 its reverse (603132031), we get a palindrome (733363337).

The spelling of 130231306 in words is "one hundred thirty million, two hundred thirty-one thousand, three hundred six".