1312231302312 has 64 divisors (see below), whose sum is σ = 3749842615680. Its totient is φ = 374862196992.

The previous prime is 1312231302307. The next prime is 1312231302313. The reversal of 1312231302312 is 2132031322131.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (1312231302313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 404398 + ... + 1669730.

It is an arithmetic number, because the mean of its divisors is an integer number (58591290870).

Almost surely, 2^{1312231302312} is an apocalyptic number.

1312231302312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1312231302312 is an abundant number, since it is smaller than the sum of its proper divisors (2437611313368).

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

1312231302312 is a wasteful number, since it uses less digits than its factorization.

1312231302312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271522 (or 1271518 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1312231302312 its reverse (2132031322131), we get a palindrome (3444262624443).

The spelling of 1312231302312 in words is "one trillion, three hundred twelve billion, two hundred thirty-one million, three hundred two thousand, three hundred twelve".