130305431 has 8 divisors (see below), whose sum is σ = 134918784. Its totient is φ = 125717760.

The previous prime is 130305397. The next prime is 130305433. The reversal of 130305431 is 134503031.

It is a happy number.

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-130305431 is a prime.

It is a super-2 number, since 2×130305431² = 33959010696191522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130305433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4211 + ... + 16683.

It is an arithmetic number, because the mean of its divisors is an integer number (16864848).

Almost surely, 2^130305431 is an apocalyptic number.

130305431 is a deficient number, since it is larger than the sum of its proper divisors (4613353).

130305431 is a wasteful number, since it uses less digits than its factorization.

130305431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12841.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 130305431 is about 11415.1404283960. The cubic root of 130305431 is about 506.9761227533.

Adding to 130305431 its reverse (134503031), we get a palindrome (264808462).

The spelling of 130305431 in words is "one hundred thirty million, three hundred five thousand, four hundred thirty-one".