1231220112323 has 8 divisors (see below), whose sum is σ = 1252864594800. Its totient is φ = 1209601508128.

The previous prime is 1231220112319. The next prime is 1231220112371. The reversal of 1231220112323 is 3232110221321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1231220112323 - 2² = 1231220112319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231220112373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6373568 + ... + 6563901.

It is an arithmetic number, because the mean of its divisors is an integer number (156608074350).

Almost surely, 2^{1231220112323} is an apocalyptic number.

1231220112323 is a deficient number, since it is larger than the sum of its proper divisors (21644482477).

1231220112323 is a wasteful number, since it uses less digits than its factorization.

1231220112323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12939141.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1231220112323 its reverse (3232110221321), we get a palindrome (4463330333644).

The spelling of 1231220112323 in words is "one trillion, two hundred thirty-one billion, two hundred twenty million, one hundred twelve thousand, three hundred twenty-three".