401241331 has 2 divisors, whose sum is σ = 401241332. Its totient is φ = 401241330.

The previous prime is 401241311. The next prime is 401241349. The reversal of 401241331 is 133142104.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401241331 is a prime.

It is a super-2 number, since 2×401241331² = 321989211405303122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401241299 and 401241308.

It is not a weakly prime, because it can be changed into another prime (401241301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200620665 + 200620666.

It is an arithmetic number, because the mean of its divisors is an integer number (200620666).

Almost surely, 2^401241331 is an apocalyptic number.

401241331 is a deficient number, since it is larger than the sum of its proper divisors (1).

401241331 is an equidigital number, since it uses as much as digits as its factorization.

401241331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 401241331 is about 20031.0092356826. The cubic root of 401241331 is about 737.5676964000.

Adding to 401241331 its reverse (133142104), we get a palindrome (534383435).

The spelling of 401241331 in words is "four hundred one million, two hundred forty-one thousand, three hundred thirty-one".