130531243 has 4 divisors (see below), whose sum is σ = 130602808. Its totient is φ = 130459680.

The previous prime is 130531223. The next prime is 130531283. The reversal of 130531243 is 342135031.

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

It is a cyclic number.

It is not a de Polignac number, because 130531243 - 2⁵ = 130531211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130531223) 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, 32973 + ... + 36718.

It is an arithmetic number, because the mean of its divisors is an integer number (32650702).

Almost surely, 2^130531243 is an apocalyptic number.

130531243 is a deficient number, since it is larger than the sum of its proper divisors (71565).

130531243 is an equidigital number, since it uses as much as digits as its factorization.

130531243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71564.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 130531243 is about 11425.0270459198. The cubic root of 130531243 is about 507.2688074738.

Adding to 130531243 its reverse (342135031), we get a palindrome (472666274).

The spelling of 130531243 in words is "one hundred thirty million, five hundred thirty-one thousand, two hundred forty-three".