123357081 has 4 divisors (see below), whose sum is σ = 164476112. Its totient is φ = 82238052.

The previous prime is 123357061. The next prime is 123357089. The reversal of 123357081 is 180753321.

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 not a de Polignac number, because 123357081 - 2⁷ = 123356953 is a prime.

It is a super-2 number, since 2×123357081² = 30433938865681122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123357089) 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, 20559511 + ... + 20559516.

It is an arithmetic number, because the mean of its divisors is an integer number (41119028).

Almost surely, 2^123357081 is an apocalyptic number.

It is an amenable number.

123357081 is a deficient number, since it is larger than the sum of its proper divisors (41119031).

123357081 is an equidigital number, since it uses as much as digits as its factorization.

123357081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41119030.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 123357081 is about 11106.6232942330. The cubic root of 123357081 is about 497.7997735421.

The spelling of 123357081 in words is "one hundred twenty-three million, three hundred fifty-seven thousand, eighty-one".