130531433 has 2 divisors, whose sum is σ = 130531434. Its totient is φ = 130531432.

The previous prime is 130531409. The next prime is 130531439. The reversal of 130531433 is 334135031.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105411289 + 25120144 = 10267^2 + 5012^2 .

It is a cyclic number.

It is not a de Polignac number, because 130531433 - 2⁶ = 130531369 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 130531399 and 130531408.

It is not a weakly prime, because it can be changed into another prime (130531439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65265716 + 65265717.

It is an arithmetic number, because the mean of its divisors is an integer number (65265717).

Almost surely, 2^130531433 is an apocalyptic number.

It is an amenable number.

130531433 is a deficient number, since it is larger than the sum of its proper divisors (1).

130531433 is an equidigital number, since it uses as much as digits as its factorization.

130531433 is an evil number, because the sum of its binary digits is even.

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

The square root of 130531433 is about 11425.0353609956. The cubic root of 130531433 is about 507.2690535988.

Adding to 130531433 its reverse (334135031), we get a palindrome (464666464).

The spelling of 130531433 in words is "one hundred thirty million, five hundred thirty-one thousand, four hundred thirty-three".