11401331 has 4 divisors (see below), whose sum is σ = 11478000. Its totient is φ = 11324664.

The previous prime is 11401309. The next prime is 11401333. The reversal of 11401331 is 13310411.

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 11401331 - 2⁶ = 11401267 is a prime.

It is a super-2 number, since 2×11401331² = 259980697143122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11401333) 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, 38111 + ... + 38408.

It is an arithmetic number, because the mean of its divisors is an integer number (2869500).

Almost surely, 2^11401331 is an apocalyptic number.

11401331 is a deficient number, since it is larger than the sum of its proper divisors (76669).

11401331 is an equidigital number, since it uses as much as digits as its factorization.

11401331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76668.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 11401331 is about 3376.5857015630. The cubic root of 11401331 is about 225.0704701075.

Adding to 11401331 its reverse (13310411), we get a palindrome (24711742).

The spelling of 11401331 in words is "eleven million, four hundred one thousand, three hundred thirty-one".