402331201 has 2 divisors, whose sum is σ = 402331202. Its totient is φ = 402331200.

The previous prime is 402331169. The next prime is 402331217. The reversal of 402331201 is 102133204.

It is a happy number.

It is an a-pointer prime, because the next prime (402331217) can be obtained adding 402331201 to its sum of digits (16).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 376321201 + 26010000 = 19399^2 + 5100^2 .

It is a cyclic number.

It is not a de Polignac number, because 402331201 - 2⁵ = 402331169 is a prime.

It is not a weakly prime, because it can be changed into another prime (402331901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201165600 + 201165601.

It is an arithmetic number, because the mean of its divisors is an integer number (201165601).

Almost surely, 2^402331201 is an apocalyptic number.

It is an amenable number.

402331201 is a deficient number, since it is larger than the sum of its proper divisors (1).

402331201 is an equidigital number, since it uses as much as digits as its factorization.

402331201 is an evil number, because the sum of its binary digits is even.

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

The square root of 402331201 is about 20058.1953575091. The cubic root of 402331201 is about 738.2348976734.

Adding to 402331201 its reverse (102133204), we get a palindrome (504464405).

The spelling of 402331201 in words is "four hundred two million, three hundred thirty-one thousand, two hundred one".