1312311023 has 16 divisors (see below), whose sum is σ = 1414423296. Its totient is φ = 1214505600.

The previous prime is 1312310983. The next prime is 1312311029. The reversal of 1312311023 is 3201132131.

It is a cyclic number.

It is not a de Polignac number, because 1312311023 - 2¹⁴ = 1312294639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1312310992 and 1312311010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312311029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99623 + ... + 112023.

It is an arithmetic number, because the mean of its divisors is an integer number (88401456).

Almost surely, 2^1312311023 is an apocalyptic number.

1312311023 is a deficient number, since it is larger than the sum of its proper divisors (102112273).

1312311023 is a wasteful number, since it uses less digits than its factorization.

1312311023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12574.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1312311023 is about 36225.8336412014. The cubic root of 1312311023 is about 1094.8272346156.

Adding to 1312311023 its reverse (3201132131), we get a palindrome (4513443154).

The spelling of 1312311023 in words is "one billion, three hundred twelve million, three hundred eleven thousand, twenty-three".