401203217 has 2 divisors, whose sum is σ = 401203218. Its totient is φ = 401203216.

The previous prime is 401203193. The next prime is 401203219. The reversal of 401203217 is 712302104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 356794321 + 44408896 = 18889^2 + 6664^2 .

It is a cyclic number.

It is not a de Polignac number, because 401203217 - 2¹⁴ = 401186833 is a prime.

It is a super-2 number, since 2×401203217² = 321928042662298178, which contains 22 as substring.

Together with 401203219, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (401203219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200601608 + 200601609.

It is an arithmetic number, because the mean of its divisors is an integer number (200601609).

Almost surely, 2^401203217 is an apocalyptic number.

It is an amenable number.

401203217 is a deficient number, since it is larger than the sum of its proper divisors (1).

401203217 is an equidigital number, since it uses as much as digits as its factorization.

401203217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 401203217 is about 20030.0578381591. The cubic root of 401203217 is about 737.5443417560.

The spelling of 401203217 in words is "four hundred one million, two hundred three thousand, two hundred seventeen".