1231112220203 has 8 divisors (see below), whose sum is σ = 1264374362160. Its totient is φ = 1198263272800.

The previous prime is 1231112220157. The next prime is 1231112220227. The reversal of 1231112220203 is 3020222111321.

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

It is not a de Polignac number, because 1231112220203 - 2¹⁶ = 1231112154667 is a prime.

It is a super-2 number, since 2×1231112220203² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231112220263) 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, 103292600 + ... + 103304517.

It is an arithmetic number, because the mean of its divisors is an integer number (158046795270).

Almost surely, 2^{1231112220203} is an apocalyptic number.

1231112220203 is a deficient number, since it is larger than the sum of its proper divisors (33262141957).

1231112220203 is a wasteful number, since it uses less digits than its factorization.

1231112220203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206597277.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1231112220203 its reverse (3020222111321), we get a palindrome (4251334331524).

The spelling of 1231112220203 in words is "one trillion, two hundred thirty-one billion, one hundred twelve million, two hundred twenty thousand, two hundred three".