40743231 has 16 divisors (see below), whose sum is σ = 57509760. Its totient is φ = 25613280.

The previous prime is 40743191. The next prime is 40743233. The reversal of 40743231 is 13234704.

It is not a de Polignac number, because 40743231 - 2¹⁵ = 40710463 is a prime.

It is a super-2 number, since 2×40743231² = 3320021744638722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40743233) 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, 1705 + ... + 9186.

It is an arithmetic number, because the mean of its divisors is an integer number (3594360).

Almost surely, 2^40743231 is an apocalyptic number.

40743231 is a deficient number, since it is larger than the sum of its proper divisors (16766529).

40743231 is a wasteful number, since it uses less digits than its factorization.

40743231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10966.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 40743231 is about 6383.0424563839. The cubic root of 40743231 is about 344.1003825263.

Adding to 40743231 its reverse (13234704), we get a palindrome (53977935).

The spelling of 40743231 in words is "forty million, seven hundred forty-three thousand, two hundred thirty-one".