111230223031 has 2 divisors, whose sum is σ = 111230223032. Its totient is φ = 111230223030.

The previous prime is 111230223023. The next prime is 111230223047. The reversal of 111230223031 is 130322032111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111230223031 - 2³ = 111230223023 is a prime.

It is a super-2 number, since 2×111230223031² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111230223011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55615111515 + 55615111516.

It is an arithmetic number, because the mean of its divisors is an integer number (55615111516).

Almost surely, 2^111230223031 is an apocalyptic number.

111230223031 is a deficient number, since it is larger than the sum of its proper divisors (1).

111230223031 is an equidigital number, since it uses as much as digits as its factorization.

111230223031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 111230223031 its reverse (130322032111), we get a palindrome (241552255142).

The spelling of 111230223031 in words is "one hundred eleven billion, two hundred thirty million, two hundred twenty-three thousand, thirty-one".