31120000123 has 2 divisors, whose sum is σ = 31120000124. Its totient is φ = 31120000122.

The previous prime is 31120000091. The next prime is 31120000133. The reversal of 31120000123 is 32100002113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31120000123 - 2⁵ = 31120000091 is a prime.

It is not a weakly prime, because it can be changed into another prime (31120000133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15560000061 + 15560000062.

It is an arithmetic number, because the mean of its divisors is an integer number (15560000062).

Almost surely, 2^31120000123 is an apocalyptic number.

31120000123 is a deficient number, since it is larger than the sum of its proper divisors (1).

31120000123 is an equidigital number, since it uses as much as digits as its factorization.

31120000123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 31120000123 its reverse (32100002113), we get a palindrome (63220002236).

The spelling of 31120000123 in words is "thirty-one billion, one hundred twenty million, one hundred twenty-three", and thus it is an aban number.