130431233 has 4 divisors (see below), whose sum is σ = 131295168. Its totient is φ = 129567300.

The previous prime is 130431199. The next prime is 130431271. The reversal of 130431233 is 332134031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130431233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130431733) 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, 431741 + ... + 432042.

It is an arithmetic number, because the mean of its divisors is an integer number (32823792).

Almost surely, 2^130431233 is an apocalyptic number.

It is an amenable number.

130431233 is a deficient number, since it is larger than the sum of its proper divisors (863935).

130431233 is an equidigital number, since it uses as much as digits as its factorization.

130431233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863934.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 130431233 is about 11420.6494123583. The cubic root of 130431233 is about 507.1392218555.

Adding to 130431233 its reverse (332134031), we get a palindrome (462565264).

The spelling of 130431233 in words is "one hundred thirty million, four hundred thirty-one thousand, two hundred thirty-three".