1401331 has 4 divisors (see below), whose sum is σ = 1404000. Its totient is φ = 1398664.

The previous prime is 1401319. The next prime is 1401349. The reversal of 1401331 is 1331041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1401331 - 2⁷ = 1401203 is a prime.

It is a super-2 number, since 2×1401331² = 3927457143122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1401371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256 + ... + 1693.

It is an arithmetic number, because the mean of its divisors is an integer number (351000).

2^1401331 is an apocalyptic number.

1401331 is a deficient number, since it is larger than the sum of its proper divisors (2669).

1401331 is an equidigital number, since it uses as much as digits as its factorization.

1401331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2668.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1401331 is about 1183.7782731576. The cubic root of 1401331 is about 111.9043347645.

Adding to 1401331 its reverse (1331041), we get a palindrome (2732372).

The spelling of 1401331 in words is "one million, four hundred one thousand, three hundred thirty-one".