1312002312 has 32 divisors (see below), whose sum is σ = 3287148480. Its totient is φ = 436381760.

The previous prime is 1312002287. The next prime is 1312002323. The reversal of 1312002312 is 2132002131.

It is a junction number, because it is equal to n+sod(n) for n = 1312002291 and 1312002300.

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, 48228 + ... + 70355.

It is an arithmetic number, because the mean of its divisors is an integer number (102723390).

Almost surely, 2^1312002312 is an apocalyptic number.

1312002312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1312002312 is an abundant number, since it is smaller than the sum of its proper divisors (1975146168).

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

1312002312 is a wasteful number, since it uses less digits than its factorization.

1312002312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119053 (or 119049 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1312002312 is about 36221.5724672466. The cubic root of 1312002312 is about 1094.7413780082.

Adding to 1312002312 its reverse (2132002131), we get a palindrome (3444004443).

The spelling of 1312002312 in words is "one billion, three hundred twelve million, two thousand, three hundred twelve".