123145713 has 6 divisors (see below), whose sum is σ = 177877154. Its totient is φ = 82097136.

The previous prime is 123145699. The next prime is 123145727. The reversal of 123145713 is 317541321.

It is an interprime number because it is at equal distance from previous prime (123145699) and next prime (123145727).

It can be written as a sum of positive squares in only one way, i.e., 123143409 + 2304 = 11097^2 + 48^2 .

It is not a de Polignac number, because 123145713 - 2⁵ = 123145681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123145793) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6841420 + ... + 6841437.

Almost surely, 2^123145713 is an apocalyptic number.

It is an amenable number.

123145713 is a deficient number, since it is larger than the sum of its proper divisors (54731441).

123145713 is a wasteful number, since it uses less digits than its factorization.

123145713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13682863 (or 13682860 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 123145713 is about 11097.1038113555. The cubic root of 123145713 is about 497.5152902214.

The spelling of 123145713 in words is "one hundred twenty-three million, one hundred forty-five thousand, seven hundred thirteen".