201131401 has 2 divisors, whose sum is σ = 201131402. Its totient is φ = 201131400.

The previous prime is 201131383. The next prime is 201131417. The reversal of 201131401 is 104131102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200364025 + 767376 = 14155^2 + 876^2 .

It is a cyclic number.

It is not a de Polignac number, because 201131401 - 2¹⁷ = 201000329 is a prime.

It is not a weakly prime, because it can be changed into another prime (201131461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100565700 + 100565701.

It is an arithmetic number, because the mean of its divisors is an integer number (100565701).

Almost surely, 2^201131401 is an apocalyptic number.

It is an amenable number.

201131401 is a deficient number, since it is larger than the sum of its proper divisors (1).

201131401 is an equidigital number, since it uses as much as digits as its factorization.

201131401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 201131401 is about 14182.0802775897. The cubic root of 201131401 is about 585.9042202718.

Adding to 201131401 its reverse (104131102), we get a palindrome (305262503).

The spelling of 201131401 in words is "two hundred one million, one hundred thirty-one thousand, four hundred one".