1312283140 has 24 divisors (see below), whose sum is σ = 3149479872. Its totient is φ = 449925600.

The previous prime is 1312283129. The next prime is 1312283149. The reversal of 1312283140 is 413822131.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1312283149) 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, 4686586 + ... + 4686865.

It is an arithmetic number, because the mean of its divisors is an integer number (131228328).

Almost surely, 2^1312283140 is an apocalyptic number.

1312283140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312283140 is an abundant number, since it is smaller than the sum of its proper divisors (1837196732).

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

1312283140 is a wasteful number, since it uses less digits than its factorization.

1312283140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9373467 (or 9373465 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 1312283140 is about 36225.4487894905. The cubic root of 1312283140 is about 1094.8194805381.

The spelling of 1312283140 in words is "one billion, three hundred twelve million, two hundred eighty-three thousand, one hundred forty".