130243431 has 16 divisors (see below), whose sum is σ = 183434240. Its totient is φ = 82071360.

The previous prime is 130243427. The next prime is 130243447. The reversal of 130243431 is 134342031.

It is not a de Polignac number, because 130243431 - 2² = 130243427 is a prime.

It is a super-2 number, since 2×130243431² = 33926702637303522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130243398 and 130243407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130243331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12286 + ... + 20283.

It is an arithmetic number, because the mean of its divisors is an integer number (11464640).

Almost surely, 2^130243431 is an apocalyptic number.

130243431 is a deficient number, since it is larger than the sum of its proper divisors (53190809).

130243431 is a wasteful number, since it uses less digits than its factorization.

130243431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32646.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 130243431 is about 11412.4244137694. The cubic root of 130243431 is about 506.8957027075.

Adding to 130243431 its reverse (134342031), we get a palindrome (264585462).

The spelling of 130243431 in words is "one hundred thirty million, two hundred forty-three thousand, four hundred thirty-one".