1312023202312 has 16 divisors (see below), whose sum is σ = 2460109396860. Its totient is φ = 655994029824.

The previous prime is 1312023202283. The next prime is 1312023202319. The reversal of 1312023202312 is 2132023202131.

It can be written as a sum of positive squares in 2 ways, for example, as 1154752264836 + 157270937476 = 1074594^2 + 396574^2 .

It is not an unprimeable number, because it can be changed into a prime (1312023202319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1876333 + ... + 2478844.

Almost surely, 2^{1312023202312} is an apocalyptic number.

It is an amenable number.

1312023202312 is a deficient number, since it is larger than the sum of its proper divisors (1148086194548).

1312023202312 is a wasteful number, since it uses less digits than its factorization.

1312023202312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4392840 (or 4392836 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1312023202312 its reverse (2132023202131), we get a palindrome (3444046404443).

The spelling of 1312023202312 in words is "one trillion, three hundred twelve billion, twenty-three million, two hundred two thousand, three hundred twelve".