1312120131323 has 16 divisors (see below), whose sum is σ = 1330407620640. Its totient is φ = 1293893812224.

The previous prime is 1312120131293. The next prime is 1312120131347. The reversal of 1312120131323 is 3231310212131.

It is a cyclic number.

It is not a de Polignac number, because 1312120131323 - 2³⁸ = 1037242224379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312120137323) 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, 125761115 + ... + 125771547.

It is an arithmetic number, because the mean of its divisors is an integer number (83150476290).

Almost surely, 2^{1312120131323} is an apocalyptic number.

1312120131323 is a deficient number, since it is larger than the sum of its proper divisors (18287489317).

1312120131323 is a wasteful number, since it uses less digits than its factorization.

1312120131323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13198.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1312120131323 its reverse (3231310212131), we get a palindrome (4543430343454).

The spelling of 1312120131323 in words is "one trillion, three hundred twelve billion, one hundred twenty million, one hundred thirty-one thousand, three hundred twenty-three".