1231330130 has 16 divisors (see below), whose sum is σ = 2241299160. Its totient is φ = 486997632.

The previous prime is 1231330129. The next prime is 1231330153. The reversal of 1231330130 is 310331321.

It can be written as a sum of positive squares in 4 ways, for example, as 508096681 + 723233449 = 22541^2 + 26893^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1231330099 and 1231330108.

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, 690869 + ... + 692648.

Almost surely, 2^1231330130 is an apocalyptic number.

1231330130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231330130 is a deficient number, since it is larger than the sum of its proper divisors (1009969030).

1231330130 is a wasteful number, since it uses less digits than its factorization.

1231330130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1383613.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 1231330130 is about 35090.3139056920. The cubic root of 1231330130 is about 1071.8273517396.

Adding to 1231330130 its reverse (310331321), we get a palindrome (1541661451).

The spelling of 1231330130 in words is "one billion, two hundred thirty-one million, three hundred thirty thousand, one hundred thirty".