130203231220 has 24 divisors (see below), whose sum is σ = 278585783784. Its totient is φ = 51098626176.

The previous prime is 130203231157. The next prime is 130203231229. The reversal of 130203231220 is 22132302031.

It can be written as a sum of positive squares in 4 ways, for example, as 2385540964 + 127817690256 = 48842^2 + 357516^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130203231229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61415559 + ... + 61417678.

It is an arithmetic number, because the mean of its divisors is an integer number (11607740991).

Almost surely, 2^130203231220 is an apocalyptic number.

130203231220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130203231220 is an abundant number, since it is smaller than the sum of its proper divisors (148382552564).

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

130203231220 is a wasteful number, since it uses less digits than its factorization.

130203231220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122833299 (or 122833297 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 130203231220 its reverse (22132302031), we get a palindrome (152335533251).

The spelling of 130203231220 in words is "one hundred thirty billion, two hundred three million, two hundred thirty-one thousand, two hundred twenty".