1231200210323 has 4 divisors (see below), whose sum is σ = 1235881580208. Its totient is φ = 1226518840440.

The previous prime is 1231200210271. The next prime is 1231200210347. The reversal of 1231200210323 is 3230120021321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1231200210323 - 2²⁰ = 1231199161747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1231200210295 and 1231200210304.

It is not an unprimeable number, because it can be changed into a prime (1231200213323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2340684548 + ... + 2340685073.

It is an arithmetic number, because the mean of its divisors is an integer number (308970395052).

Almost surely, 2^{1231200210323} is an apocalyptic number.

1231200210323 is a deficient number, since it is larger than the sum of its proper divisors (4681369885).

1231200210323 is an equidigital number, since it uses as much as digits as its factorization.

1231200210323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4681369884.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1231200210323 its reverse (3230120021321), we get a palindrome (4461320231644).

The spelling of 1231200210323 in words is "one trillion, two hundred thirty-one billion, two hundred million, two hundred ten thousand, three hundred twenty-three".