123000031139 has 2 divisors, whose sum is σ = 123000031140. Its totient is φ = 123000031138.

The previous prime is 123000031127. The next prime is 123000031153. The reversal of 123000031139 is 931130000321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123000031139 - 2¹² = 123000027043 is a prime.

It is not a weakly prime, because it can be changed into another prime (123000031159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61500015569 + 61500015570.

It is an arithmetic number, because the mean of its divisors is an integer number (61500015570).

Almost surely, 2^123000031139 is an apocalyptic number.

123000031139 is a deficient number, since it is larger than the sum of its proper divisors (1).

123000031139 is an equidigital number, since it uses as much as digits as its factorization.

123000031139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 23.

The spelling of 123000031139 in words is "one hundred twenty-three billion, thirty-one thousand, one hundred thirty-nine".