40358731 has 16 divisors (see below), whose sum is σ = 49083840. Its totient is φ = 32394240.

The previous prime is 40358713. The next prime is 40358737. The reversal of 40358731 is 13785304.

It is a cyclic number.

It is not a de Polignac number, because 40358731 - 2¹¹ = 40356683 is a prime.

It is a super-2 number, since 2×40358731² = 3257654335860722, 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 = 40358693 and 40358702.

It is not an unprimeable number, because it can be changed into a prime (40358737) 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, 26511 + ... + 27991.

It is an arithmetic number, because the mean of its divisors is an integer number (3067740).

Almost surely, 2^40358731 is an apocalyptic number.

40358731 is a deficient number, since it is larger than the sum of its proper divisors (8725109).

40358731 is a wasteful number, since it uses less digits than its factorization.

40358731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1734.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 40358731 is about 6352.8521940936. The cubic root of 40358731 is about 343.0145171460.

The spelling of 40358731 in words is "forty million, three hundred fifty-eight thousand, seven hundred thirty-one".