40955731 has 2 divisors, whose sum is σ = 40955732. Its totient is φ = 40955730.

The previous prime is 40955729. The next prime is 40955741. The reversal of 40955731 is 13755904.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40955731 - 2¹ = 40955729 is a prime.

It is a super-2 number, since 2×40955731² = 3354743803488722, which contains 22 as substring.

Together with 40955729, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (40955741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20477865 + 20477866.

It is an arithmetic number, because the mean of its divisors is an integer number (20477866).

Almost surely, 2^40955731 is an apocalyptic number.

40955731 is a deficient number, since it is larger than the sum of its proper divisors (1).

40955731 is an equidigital number, since it uses as much as digits as its factorization.

40955731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 40955731 is about 6399.6664756845. Note that the first 3 decimals coincide. The cubic root of 40955731 is about 344.6975743618.

The spelling of 40955731 in words is "forty million, nine hundred fifty-five thousand, seven hundred thirty-one".