123214113509 has 2 divisors, whose sum is σ = 123214113510. Its totient is φ = 123214113508.

The previous prime is 123214113443. The next prime is 123214113599. The reversal of 123214113509 is 905311412321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118953940609 + 4260172900 = 344897^2 + 65270^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123214113509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123214113599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61607056754 + 61607056755.

It is an arithmetic number, because the mean of its divisors is an integer number (61607056755).

Almost surely, 2^123214113509 is an apocalyptic number.

It is an amenable number.

123214113509 is a deficient number, since it is larger than the sum of its proper divisors (1).

123214113509 is an equidigital number, since it uses as much as digits as its factorization.

123214113509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 32.

The spelling of 123214113509 in words is "one hundred twenty-three billion, two hundred fourteen million, one hundred thirteen thousand, five hundred nine".