130433531 has 4 divisors (see below), whose sum is σ = 130486464. Its totient is φ = 130380600.

The previous prime is 130433489. The next prime is 130433539. The reversal of 130433531 is 135334031.

It is a happy number.

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 130433531 - 2⁶ = 130433467 is a prime.

It is a super-2 number, since 2×130433531² = 34025812018255922, 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 = 130433497 and 130433506.

It is not an unprimeable number, because it can be changed into a prime (130433539) 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, 22580 + ... + 27761.

It is an arithmetic number, because the mean of its divisors is an integer number (32621616).

Almost surely, 2^130433531 is an apocalyptic number.

130433531 is a deficient number, since it is larger than the sum of its proper divisors (52933).

130433531 is an equidigital number, since it uses as much as digits as its factorization.

130433531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52932.

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 130433531 is about 11420.7500191537. The cubic root of 130433531 is about 507.1422001786.

Adding to 130433531 its reverse (135334031), we get a palindrome (265767562).

The spelling of 130433531 in words is "one hundred thirty million, four hundred thirty-three thousand, five hundred thirty-one".