40731147 has 8 divisors (see below), whose sum is σ = 60342480. Its totient is φ = 27154080.

The previous prime is 40731127. The next prime is 40731149. The reversal of 40731147 is 74113704.

It is not a de Polignac number, because 40731147 - 2¹⁵ = 40698379 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1508561 = 40731147 / (4 + 0 + 7 + 3 + 1 + 1 + 4 + 7).

It is a self number, because there is not a number n which added to its sum of digits gives 40731147.

It is not an unprimeable number, because it can be changed into a prime (40731149) 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 7 ways as a sum of consecutive naturals, for example, 754254 + ... + 754307.

It is an arithmetic number, because the mean of its divisors is an integer number (7542810).

Almost surely, 2^40731147 is an apocalyptic number.

40731147 is a deficient number, since it is larger than the sum of its proper divisors (19611333).

40731147 is a wasteful number, since it uses less digits than its factorization.

40731147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1508570 (or 1508564 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 40731147 is about 6382.0958156392. The cubic root of 40731147 is about 344.0663603499.

The spelling of 40731147 in words is "forty million, seven hundred thirty-one thousand, one hundred forty-seven".