130031221032 has 96 divisors (see below), whose sum is σ = 367919253000. Its totient is φ = 41434713600.

The previous prime is 130031221013. The next prime is 130031221037. The reversal of 130031221032 is 230122130031.

130031221032 is a `hidden beast` number, since 1 + 300 + 312 + 21 + 0 + 32 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 129811766436 + 219454596 = 360294^2 + 14814^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 130031220996 and 130031221014.

It is not an unprimeable number, because it can be changed into a prime (130031221037) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 97407 + ... + 519182.

Almost surely, 2^130031221032 is an apocalyptic number.

130031221032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

130031221032 is an abundant number, since it is smaller than the sum of its proper divisors (237888031968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

130031221032 is a wasteful number, since it uses less digits than its factorization.

130031221032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616731 (or 616724 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 130031221032 its reverse (230122130031), we get a palindrome (360153351063).

The spelling of 130031221032 in words is "one hundred thirty billion, thirty-one million, two hundred twenty-one thousand, thirty-two".