203163401 has 4 divisors (see below), whose sum is σ = 232186752. Its totient is φ = 174140052.

The previous prime is 203163397. The next prime is 203163421. The reversal of 203163401 is 104361302.

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, and also an emirpimes, since its reverse is a distinct semiprime: 104361302 = 2 ⋅52180651.

It is a cyclic number.

It is not a de Polignac number, because 203163401 - 2² = 203163397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (203163421) 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, 14511665 + ... + 14511678.

It is an arithmetic number, because the mean of its divisors is an integer number (58046688).

Almost surely, 2^203163401 is an apocalyptic number.

It is an amenable number.

203163401 is a deficient number, since it is larger than the sum of its proper divisors (29023351).

203163401 is an equidigital number, since it uses as much as digits as its factorization.

203163401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29023350.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 203163401 is about 14253.5399462730. The cubic root of 203163401 is about 587.8707131256.

The spelling of 203163401 in words is "two hundred three million, one hundred sixty-three thousand, four hundred one".