40111131 has 16 divisors (see below), whose sum is σ = 54996480. Its totient is φ = 25989600.

The previous prime is 40111129. The next prime is 40111133. The reversal of 40111131 is 13111104.

It is an interprime number because it is at equal distance from previous prime (40111129) and next prime (40111133).

It is not a de Polignac number, because 40111131 - 2¹ = 40111129 is a prime.

It is a super-2 number, since 2×40111131² = 3217805660198322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40111133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30181 + ... + 31481.

It is an arithmetic number, because the mean of its divisors is an integer number (3437280).

Almost surely, 2^40111131 is an apocalyptic number.

40111131 is a deficient number, since it is larger than the sum of its proper divisors (14885349).

40111131 is a wasteful number, since it uses less digits than its factorization.

40111131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586.

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

The square root of 40111131 is about 6333.3349035086. The cubic root of 40111131 is about 342.3116153714.

Adding to 40111131 its reverse (13111104), we get a palindrome (53222235).

The spelling of 40111131 in words is "forty million, one hundred eleven thousand, one hundred thirty-one".