130431001 has 4 divisors (see below), whose sum is σ = 130876452. Its totient is φ = 129985552.

The previous prime is 130430983. The next prime is 130431017. The reversal of 130431001 is 100134031.

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

It can be written as a sum of positive squares in 2 ways, for example, as 86936976 + 43494025 = 9324^2 + 6595^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130431001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130441001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222286 + ... + 222871.

It is an arithmetic number, because the mean of its divisors is an integer number (32719113).

Almost surely, 2^130431001 is an apocalyptic number.

It is an amenable number.

130431001 is a deficient number, since it is larger than the sum of its proper divisors (445451).

130431001 is an equidigital number, since it uses as much as digits as its factorization.

130431001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445450.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 130431001 is about 11420.6392553132. The cubic root of 130431001 is about 507.1389211699.

Adding to 130431001 its reverse (100134031), we get a palindrome (230565032).

The spelling of 130431001 in words is "one hundred thirty million, four hundred thirty-one thousand, one".