123503503139 has 2 divisors, whose sum is σ = 123503503140. Its totient is φ = 123503503138.

The previous prime is 123503503117. The next prime is 123503503141. The reversal of 123503503139 is 931305305321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123503503139 - 2¹² = 123503499043 is a prime.

Together with 123503503141, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 123503503099 and 123503503108.

It is not a weakly prime, because it can be changed into another prime (123503503339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61751751569 + 61751751570.

It is an arithmetic number, because the mean of its divisors is an integer number (61751751570).

Almost surely, 2^123503503139 is an apocalyptic number.

123503503139 is a deficient number, since it is larger than the sum of its proper divisors (1).

123503503139 is an equidigital number, since it uses as much as digits as its factorization.

123503503139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36450, while the sum is 35.

The spelling of 123503503139 in words is "one hundred twenty-three billion, five hundred three million, five hundred three thousand, one hundred thirty-nine".