130431643 has 4 divisors (see below), whose sum is σ = 136102608. Its totient is φ = 124760680.

The previous prime is 130431641. The next prime is 130431649. The reversal of 130431643 is 346134031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 346134031 = 1583 ⋅218657.

It is a cyclic number.

It is not a de Polignac number, because 130431643 - 2¹ = 130431641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130431641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2835448 + ... + 2835493.

It is an arithmetic number, because the mean of its divisors is an integer number (34025652).

Almost surely, 2^130431643 is an apocalyptic number.

130431643 is a deficient number, since it is larger than the sum of its proper divisors (5670965).

130431643 is an equidigital number, since it uses as much as digits as its factorization.

130431643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5670964.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 130431643 is about 11420.6673622867. The cubic root of 130431643 is about 507.1397532386.

Adding to 130431643 its reverse (346134031), we get a palindrome (476565674).

The spelling of 130431643 in words is "one hundred thirty million, four hundred thirty-one thousand, six hundred forty-three".