1400331 has 4 divisors (see below), whose sum is σ = 1867112. Its totient is φ = 933552.

The previous prime is 1400327. The next prime is 1400353. The reversal of 1400331 is 1330041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1330041 = 3 ⋅443347.

It is not a de Polignac number, because 1400331 - 2² = 1400327 is a prime.

It is a super-2 number, since 2×1400331² = 3921853819122, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1400131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233386 + ... + 233391.

It is an arithmetic number, because the mean of its divisors is an integer number (466778).

2^1400331 is an apocalyptic number.

1400331 is a deficient number, since it is larger than the sum of its proper divisors (466781).

1400331 is an equidigital number, since it uses as much as digits as its factorization.

1400331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466780.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1400331 is about 1183.3558213826. The cubic root of 1400331 is about 111.8777098477.

Adding to 1400331 its reverse (1330041), we get a palindrome (2730372).

The spelling of 1400331 in words is "one million, four hundred thousand, three hundred thirty-one".