1231332130 has 16 divisors (see below), whose sum is σ = 2533026240. Its totient is φ = 422170992.

The previous prime is 1231332119. The next prime is 1231332169. The reversal of 1231332130 is 312331321.

It is a junction number, because it is equal to n+sod(n) for n = 1231332098 and 1231332107.

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, 8795160 + ... + 8795299.

It is an arithmetic number, because the mean of its divisors is an integer number (158314140).

Almost surely, 2^1231332130 is an apocalyptic number.

1231332130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231332130 is an abundant number, since it is smaller than the sum of its proper divisors (1301694110).

1231332130 is a wasteful number, since it uses less digits than its factorization.

1231332130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17590473.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1231332130 is about 35090.3424035731. The cubic root of 1231332130 is about 1071.8279320479.

Adding to 1231332130 its reverse (312331321), we get a palindrome (1543663451).

The spelling of 1231332130 in words is "one billion, two hundred thirty-one million, three hundred thirty-two thousand, one hundred thirty".