31112001223123 has 2 divisors, whose sum is σ = 31112001223124. Its totient is φ = 31112001223122.

The previous prime is 31112001223091. The next prime is 31112001223129. The reversal of 31112001223123 is 32132210021113.

It is a strong prime.

It is an emirp because it is prime and its reverse (32132210021113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31112001223123 - 2⁵ = 31112001223091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31112001223094 and 31112001223103.

It is not a weakly prime, because it can be changed into another prime (31112001223129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15556000611561 + 15556000611562.

It is an arithmetic number, because the mean of its divisors is an integer number (15556000611562).

Almost surely, 2^{31112001223123} is an apocalyptic number.

31112001223123 is a deficient number, since it is larger than the sum of its proper divisors (1).

31112001223123 is an equidigital number, since it uses as much as digits as its factorization.

31112001223123 is an evil number, because the sum of its binary digits is even.

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

Adding to 31112001223123 its reverse (32132210021113), we get a palindrome (63244211244236).

The spelling of 31112001223123 in words is "thirty-one trillion, one hundred twelve billion, one million, two hundred twenty-three thousand, one hundred twenty-three".