40943731 has 4 divisors (see below), whose sum is σ = 41113864. Its totient is φ = 40773600.

The previous prime is 40943723. The next prime is 40943741. The reversal of 40943731 is 13734904.

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 40943731 - 2³ = 40943723 is a prime.

It is a super-2 number, since 2×40943731² = 3352778216400722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40943693 and 40943702.

It is not an unprimeable number, because it can be changed into a prime (40943741) 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, 84705 + ... + 85186.

It is an arithmetic number, because the mean of its divisors is an integer number (10278466).

Almost surely, 2^40943731 is an apocalyptic number.

40943731 is a deficient number, since it is larger than the sum of its proper divisors (170133).

40943731 is a wasteful number, since it uses less digits than its factorization.

40943731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170132.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 40943731 is about 6398.7288581405. The cubic root of 40943731 is about 344.6639056921.

The spelling of 40943731 in words is "forty million, nine hundred forty-three thousand, seven hundred thirty-one".