1231312130 has 32 divisors (see below), whose sum is σ = 2334386304. Its totient is φ = 466698496.

The previous prime is 1231312111. The next prime is 1231312151. The reversal of 1231312130 is 312131321.

It is a super-2 number, since 2×1231312130² = 3032259122970273800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1231312099 and 1231312108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 407 + ... + 49626.

It is an arithmetic number, because the mean of its divisors is an integer number (72949572).

Almost surely, 2^1231312130 is an apocalyptic number.

1231312130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231312130 is a deficient number, since it is larger than the sum of its proper divisors (1103074174).

1231312130 is a wasteful number, since it uses less digits than its factorization.

1231312130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50170.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1231312130 is about 35090.0574237205. The cubic root of 1231312130 is about 1071.8221289360.

Adding to 1231312130 its reverse (312131321), we get a palindrome (1543443451).

The spelling of 1231312130 in words is "one billion, two hundred thirty-one million, three hundred twelve thousand, one hundred thirty".