123031011937 has 2 divisors, whose sum is σ = 123031011938. Its totient is φ = 123031011936.

The previous prime is 123031011911. The next prime is 123031011973. The reversal of 123031011937 is 739110130321.

Together with next prime (123031011973) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80519170081 + 42511841856 = 283759^2 + 206184^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123031011937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123031011899 and 123031011908.

It is not a weakly prime, because it can be changed into another prime (123031015937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61515505968 + 61515505969.

It is an arithmetic number, because the mean of its divisors is an integer number (61515505969).

Almost surely, 2^123031011937 is an apocalyptic number.

It is an amenable number.

123031011937 is a deficient number, since it is larger than the sum of its proper divisors (1).

123031011937 is an equidigital number, since it uses as much as digits as its factorization.

123031011937 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 31.

The spelling of 123031011937 in words is "one hundred twenty-three billion, thirty-one million, eleven thousand, nine hundred thirty-seven".