231101111203 has 4 divisors (see below), whose sum is σ = 232920805120. Its totient is φ = 229281417288.

The previous prime is 231101111191. The next prime is 231101111207. The reversal of 231101111203 is 302111101132.

It is a happy number.

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 231101111203 - 2²⁵ = 231067556771 is a prime.

It is a super-2 number, since 2×231101111203² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231101111207) 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, 909846768 + ... + 909847021.

It is an arithmetic number, because the mean of its divisors is an integer number (58230201280).

Almost surely, 2^231101111203 is an apocalyptic number.

231101111203 is a deficient number, since it is larger than the sum of its proper divisors (1819693917).

231101111203 is a wasteful number, since it uses less digits than its factorization.

231101111203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1819693916.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 231101111203 its reverse (302111101132), we get a palindrome (533212212335).

The spelling of 231101111203 in words is "two hundred thirty-one billion, one hundred one million, one hundred eleven thousand, two hundred three".