123151393 has 4 divisors (see below), whose sum is σ = 123642288. Its totient is φ = 122660500.

The previous prime is 123151381. The next prime is 123151403. The reversal of 123151393 is 393151321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123151393 - 2²⁵ = 89596961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123151993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245071 + ... + 245572.

It is an arithmetic number, because the mean of its divisors is an integer number (30910572).

Almost surely, 2^123151393 is an apocalyptic number.

It is an amenable number.

123151393 is a deficient number, since it is larger than the sum of its proper divisors (490895).

123151393 is an equidigital number, since it uses as much as digits as its factorization.

123151393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490894.

The product of its digits is 2430, while the sum is 28.

The square root of 123151393 is about 11097.3597310351. The cubic root of 123151393 is about 497.5229392721.

The spelling of 123151393 in words is "one hundred twenty-three million, one hundred fifty-one thousand, three hundred ninety-three".