1312231201023 has 16 divisors (see below), whose sum is σ = 1789581536640. Its totient is φ = 855022249824.

The previous prime is 1312231201019. The next prime is 1312231201037. The reversal of 1312231201023 is 3201021322131.

It is not a de Polignac number, because 1312231201023 - 2² = 1312231201019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312231200023) 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, 21396361 + ... + 21457602.

It is an arithmetic number, because the mean of its divisors is an integer number (111848846040).

Almost surely, 2^{1312231201023} is an apocalyptic number.

1312231201023 is a deficient number, since it is larger than the sum of its proper divisors (477350335617).

1312231201023 is a wasteful number, since it uses less digits than its factorization.

1312231201023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42854198.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1312231201023 its reverse (3201021322131), we get a palindrome (4513252523154).

The spelling of 1312231201023 in words is "one trillion, three hundred twelve billion, two hundred thirty-one million, two hundred one thousand, twenty-three".