20310401 has 2 divisors, whose sum is σ = 20310402. Its totient is φ = 20310400.

The previous prime is 20310397. The next prime is 20310463. The reversal of 20310401 is 10401302.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20295025 + 15376 = 4505^2 + 124^2 .

It is a cyclic number.

It is not a de Polignac number, because 20310401 - 2² = 20310397 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20310481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10155200 + 10155201.

It is an arithmetic number, because the mean of its divisors is an integer number (10155201).

Almost surely, 2^20310401 is an apocalyptic number.

It is an amenable number.

20310401 is a deficient number, since it is larger than the sum of its proper divisors (1).

20310401 is an equidigital number, since it uses as much as digits as its factorization.

20310401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 20310401 is about 4506.7062251715. The cubic root of 20310401 is about 272.8388221496.

Adding to 20310401 its reverse (10401302), we get a palindrome (30711703).

Subtracting from 20310401 its reverse (10401302), we obtain a palindrome (9909099).

The spelling of 20310401 in words is "twenty million, three hundred ten thousand, four hundred one".