130020123231 has 12 divisors (see below), whose sum is σ = 198854306352. Its totient is φ = 81581253696.

The previous prime is 130020123193. The next prime is 130020123241. The reversal of 130020123231 is 132321020031.

It is not a de Polignac number, because 130020123231 - 2²² = 130015928927 is a prime.

It is a super-2 number, since 2×130020123231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130020123241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 424902211 + ... + 424902516.

It is an arithmetic number, because the mean of its divisors is an integer number (16571192196).

Almost surely, 2^130020123231 is an apocalyptic number.

130020123231 is a deficient number, since it is larger than the sum of its proper divisors (68834183121).

130020123231 is a wasteful number, since it uses less digits than its factorization.

130020123231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849804750 (or 849804747 counting only the distinct ones).

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

Adding to 130020123231 its reverse (132321020031), we get a palindrome (262341143262).

The spelling of 130020123231 in words is "one hundred thirty billion, twenty million, one hundred twenty-three thousand, two hundred thirty-one".