123886361 has 4 divisors (see below), whose sum is σ = 131173812. Its totient is φ = 116598912.

The previous prime is 123886351. The next prime is 123886369. The reversal of 123886361 is 163688321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 163688321 = 103 ⋅1589207.

It can be written as a sum of positive squares in 2 ways, for example, as 107329600 + 16556761 = 10360^2 + 4069^2 .

It is a cyclic number.

It is not a de Polignac number, because 123886361 - 2¹⁸ = 123624217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123886369) 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, 3643700 + ... + 3643733.

It is an arithmetic number, because the mean of its divisors is an integer number (32793453).

Almost surely, 2^123886361 is an apocalyptic number.

It is an amenable number.

123886361 is a deficient number, since it is larger than the sum of its proper divisors (7287451).

123886361 is an equidigital number, since it uses as much as digits as its factorization.

123886361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7287450.

The product of its digits is 41472, while the sum is 38.

The square root of 123886361 is about 11130.4250143469. The cubic root of 123886361 is about 498.5107164734.

The spelling of 123886361 in words is "one hundred twenty-three million, eight hundred eighty-six thousand, three hundred sixty-one".