113203211231 has 8 divisors (see below), whose sum is σ = 129994118400. Its totient is φ = 97495588440.

The previous prime is 113203211183. The next prime is 113203211237. The reversal of 113203211231 is 132112302311.

It is a happy number.

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

It is not a de Polignac number, because 113203211231 - 2¹⁸ = 113202949087 is a prime.

It is a super-2 number, since 2×113203211231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113203211237) 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, 270820871 + ... + 270821288.

It is an arithmetic number, because the mean of its divisors is an integer number (16249264800).

Almost surely, 2^113203211231 is an apocalyptic number.

113203211231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

113203211231 is a deficient number, since it is larger than the sum of its proper divisors (16790907169).

113203211231 is a wasteful number, since it uses less digits than its factorization.

113203211231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541642189.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 113203211231 its reverse (132112302311), we get a palindrome (245315513542).

The spelling of 113203211231 in words is "one hundred thirteen billion, two hundred three million, two hundred eleven thousand, two hundred thirty-one".