1312303313000 has 32 divisors (see below), whose sum is σ = 3070789754760. Its totient is φ = 524921324800.

The previous prime is 1312303312981. The next prime is 1312303313003. The reversal of 1312303313000 is 3133032131.

It can be written as a sum of positive squares in 4 ways, for example, as 692433679876 + 619869633124 = 832126^2 + 787318^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (1312303313003) 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, 656150657 + ... + 656152656.

Almost surely, 2^{1312303313000} is an apocalyptic number.

1312303313000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312303313000 is an abundant number, since it is smaller than the sum of its proper divisors (1758486441760).

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

1312303313000 is a wasteful number, since it uses less digits than its factorization.

1312303313000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1312303334 (or 1312303320 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 20.

Adding to 1312303313000 its reverse (3133032131), we get a palindrome (1315436345131).

The spelling of 1312303313000 in words is "one trillion, three hundred twelve billion, three hundred three million, three hundred thirteen thousand".