1213231112323 has 16 divisors (see below), whose sum is σ = 1285745114880. Its totient is φ = 1140845095936.

The previous prime is 1213231112281. The next prime is 1213231112329. The reversal of 1213231112323 is 3232111323121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213231112323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213231112329) 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, 131056311 + ... + 131065567.

It is an arithmetic number, because the mean of its divisors is an integer number (80359069680).

Almost surely, 2^{1213231112323} is an apocalyptic number.

1213231112323 is a deficient number, since it is larger than the sum of its proper divisors (72514002557).

1213231112323 is a wasteful number, since it uses less digits than its factorization.

1213231112323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15326.

The product of its digits is 1296, while the sum is 25.

Adding to 1213231112323 its reverse (3232111323121), we get a palindrome (4445342435444).

The spelling of 1213231112323 in words is "one trillion, two hundred thirteen billion, two hundred thirty-one million, one hundred twelve thousand, three hundred twenty-three".