40531347 has 20 divisors (see below), whose sum is σ = 60719736. Its totient is φ = 26943840.

The previous prime is 40531333. The next prime is 40531363. The reversal of 40531347 is 74313504.

It is not a de Polignac number, because 40531347 - 2⁴ = 40531331 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 40531347.

It is not an unprimeable number, because it can be changed into a prime (40531367) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 49572 + ... + 50382.

Almost surely, 2^40531347 is an apocalyptic number.

40531347 is a deficient number, since it is larger than the sum of its proper divisors (20188389).

40531347 is an equidigital number, since it uses as much as digits as its factorization.

40531347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1440 (or 1431 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 40531347 is about 6366.4234072201. The cubic root of 40531347 is about 343.5028507992.

The spelling of 40531347 in words is "forty million, five hundred thirty-one thousand, three hundred forty-seven".