1231220231203 has 4 divisors (see below), whose sum is σ = 1231278828760. Its totient is φ = 1231161633648.

The previous prime is 1231220231201. The next prime is 1231220231249. The reversal of 1231220231203 is 3021320221321.

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 1231220231203 - 2¹ = 1231220231201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231220231201) 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, 29267250 + ... + 29309287.

It is an arithmetic number, because the mean of its divisors is an integer number (307819707190).

Almost surely, 2^{1231220231203} is an apocalyptic number.

1231220231203 is a deficient number, since it is larger than the sum of its proper divisors (58597557).

1231220231203 is an equidigital number, since it uses as much as digits as its factorization.

1231220231203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58597556.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1231220231203 its reverse (3021320221321), we get a palindrome (4252540452524).

The spelling of 1231220231203 in words is "one trillion, two hundred thirty-one billion, two hundred twenty million, two hundred thirty-one thousand, two hundred three".