231200221113031 has 2 divisors, whose sum is σ = 231200221113032. Its totient is φ = 231200221113030.

The previous prime is 231200221113023. The next prime is 231200221113047. The reversal of 231200221113031 is 130311122002132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231200221113031 - 2³ = 231200221113023 is a prime.

It is a super-2 number, since 2×231200221113031² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231200221112993 and 231200221113011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231200221116031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115600110556515 + 115600110556516.

It is an arithmetic number, because the mean of its divisors is an integer number (115600110556516).

Almost surely, 2^{231200221113031} is an apocalyptic number.

231200221113031 is a deficient number, since it is larger than the sum of its proper divisors (1).

231200221113031 is an equidigital number, since it uses as much as digits as its factorization.

231200221113031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 231200221113031 its reverse (130311122002132), we get a palindrome (361511343115163).

The spelling of 231200221113031 in words is "two hundred thirty-one trillion, two hundred billion, two hundred twenty-one million, one hundred thirteen thousand, thirty-one".