801331 has 2 divisors, whose sum is σ = 801332. Its totient is φ = 801330.

The previous prime is 801301. The next prime is 801337. The reversal of 801331 is 133108.

801331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 801331 - 2¹³ = 793139 is a prime.

It is a super-2 number, since 2×801331² = 1284262743122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (801337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400665 + 400666.

It is an arithmetic number, because the mean of its divisors is an integer number (400666).

2⁸⁰¹³³¹ is an apocalyptic number.

801331 is a deficient number, since it is larger than the sum of its proper divisors (1).

801331 is an equidigital number, since it uses as much as digits as its factorization.

801331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 801331 is about 895.1709333976. The cubic root of 801331 is about 92.8832311032.

Adding to 801331 its reverse (133108), we get a palindrome (934439).

The spelling of 801331 in words is "eight hundred one thousand, three hundred thirty-one".