123203401 has 4 divisors (see below), whose sum is σ = 126208404. Its totient is φ = 120198400.

The previous prime is 123203383. The next prime is 123203411. The reversal of 123203401 is 104302321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104302321 = 31 ⋅3364591.

It can be written as a sum of positive squares in 2 ways, for example, as 2972176 + 120231225 = 1724^2 + 10965^2 .

It is a cyclic number.

It is not a de Polignac number, because 123203401 - 2¹⁵ = 123170633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123203411) 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, 1502440 + ... + 1502521.

It is an arithmetic number, because the mean of its divisors is an integer number (31552101).

Almost surely, 2^123203401 is an apocalyptic number.

It is an amenable number.

123203401 is a deficient number, since it is larger than the sum of its proper divisors (3005003).

123203401 is an equidigital number, since it uses as much as digits as its factorization.

123203401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3005002.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 123203401 is about 11099.7027437675. The cubic root of 123203401 is about 497.5929656323.

Adding to 123203401 its reverse (104302321), we get a palindrome (227505722).

The spelling of 123203401 in words is "one hundred twenty-three million, two hundred three thousand, four hundred one".