203376121 has 9 divisors (see below), whose sum is σ = 220424781. Its totient is φ = 187560672.

The previous prime is 203376119. The next prime is 203376137. The reversal of 203376121 is 121673302.

The square root of 203376121 is 14261.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 67420521 + 135955600 = 8211^2 + 11660^2 .

It is not a de Polignac number, because 203376121 - 2¹ = 203376119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203376421) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 184845 + ... + 185941.

Almost surely, 2^203376121 is an apocalyptic number.

203376121 is the 14261-st square number.

203376121 is the 7131-st centered octagonal number.

It is an amenable number.

203376121 is a deficient number, since it is larger than the sum of its proper divisors (17048660).

203376121 is an frugal number, since it uses more digits than its factorization.

203376121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2220 (or 1110 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 25.

The cubic root of 203376121 is about 588.0758160758.

Multiplying 203376121 by its sum of digits (25), we get a square (5084403025 = 71305²).

The spelling of 203376121 in words is "two hundred three million, three hundred seventy-six thousand, one hundred twenty-one".