40111331 has 4 divisors (see below), whose sum is σ = 43196832. Its totient is φ = 37025832.

The previous prime is 40111319. The next prime is 40111339. The reversal of 40111331 is 13311104.

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 40111331 - 2¹⁴ = 40094947 is a prime.

It is a super-2 number, since 2×40111331² = 3217837749183122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40111339) 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, 1542731 + ... + 1542756.

It is an arithmetic number, because the mean of its divisors is an integer number (10799208).

Almost surely, 2^40111331 is an apocalyptic number.

40111331 is a deficient number, since it is larger than the sum of its proper divisors (3085501).

40111331 is a wasteful number, since it uses less digits than its factorization.

40111331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3085500.

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

The square root of 40111331 is about 6333.3506929587. The cubic root of 40111331 is about 342.3121843091.

Adding to 40111331 its reverse (13311104), we get a palindrome (53422435).

The spelling of 40111331 in words is "forty million, one hundred eleven thousand, three hundred thirty-one".