1203313112231 has 4 divisors (see below), whose sum is σ = 1203315313200. Its totient is φ = 1203310911264.

The previous prime is 1203313112227. The next prime is 1203313112237. The reversal of 1203313112231 is 1322113133021.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1203313112231 - 2² = 1203313112227 is a prime.

It is a super-2 number, since 2×1203313112231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1203313112197 and 1203313112206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203313112237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 418175 + ... + 1606703.

It is an arithmetic number, because the mean of its divisors is an integer number (300828828300).

Almost surely, 2^{1203313112231} is an apocalyptic number.

1203313112231 is a deficient number, since it is larger than the sum of its proper divisors (2200969).

1203313112231 is a wasteful number, since it uses less digits than its factorization.

1203313112231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2200968.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1203313112231 its reverse (1322113133021), we get a palindrome (2525426245252).

The spelling of 1203313112231 in words is "one trillion, two hundred three billion, three hundred thirteen million, one hundred twelve thousand, two hundred thirty-one".