31230123233 has 2 divisors, whose sum is σ = 31230123234. Its totient is φ = 31230123232.

The previous prime is 31230123227. The next prime is 31230123251. The reversal of 31230123233 is 33232103213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22292878864 + 8937244369 = 149308^2 + 94537^2 .

It is a cyclic number.

It is not a de Polignac number, because 31230123233 - 2⁴ = 31230123217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31230123199 and 31230123208.

It is not a weakly prime, because it can be changed into another prime (31230123203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15615061616 + 15615061617.

It is an arithmetic number, because the mean of its divisors is an integer number (15615061617).

Almost surely, 2^31230123233 is an apocalyptic number.

It is an amenable number.

31230123233 is a deficient number, since it is larger than the sum of its proper divisors (1).

31230123233 is an equidigital number, since it uses as much as digits as its factorization.

31230123233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 31230123233 its reverse (33232103213), we get a palindrome (64462226446).

The spelling of 31230123233 in words is "thirty-one billion, two hundred thirty million, one hundred twenty-three thousand, two hundred thirty-three".