130431332 has 24 divisors (see below), whose sum is σ = 234382680. Its totient is φ = 63472640.

The previous prime is 130431317. The next prime is 130431383. The reversal of 130431332 is 233134031.

It can be written as a sum of positive squares in 4 ways, for example, as 106276 + 130325056 = 326^2 + 11416^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100544 + ... + 101832.

It is an arithmetic number, because the mean of its divisors is an integer number (9765945).

Almost surely, 2^130431332 is an apocalyptic number.

It is an amenable number.

130431332 is a deficient number, since it is larger than the sum of its proper divisors (103951348).

130431332 is a wasteful number, since it uses less digits than its factorization.

130431332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1951 (or 1949 counting only the distinct ones).

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

The square root of 130431332 is about 11420.6537466119. The cubic root of 130431332 is about 507.1393501651.

Adding to 130431332 its reverse (233134031), we get a palindrome (363565363).

The spelling of 130431332 in words is "one hundred thirty million, four hundred thirty-one thousand, three hundred thirty-two".