40547331 has 16 divisors (see below), whose sum is σ = 65531520. Its totient is φ = 24573960.

The previous prime is 40547327. The next prime is 40547369. The reversal of 40547331 is 13374504.

It is not a de Polignac number, because 40547331 - 2² = 40547327 is a prime.

It is a super-2 number, since 2×40547331² = 3288172102447122, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 40547295 and 40547304.

It is not an unprimeable number, because it can be changed into a prime (40547231) 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 15 ways as a sum of consecutive naturals, for example, 67965 + ... + 68558.

It is an arithmetic number, because the mean of its divisors is an integer number (4095720).

Almost surely, 2^40547331 is an apocalyptic number.

40547331 is a deficient number, since it is larger than the sum of its proper divisors (24984189).

40547331 is a wasteful number, since it uses less digits than its factorization.

40547331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136543 (or 136537 counting only the distinct ones).

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

The square root of 40547331 is about 6367.6786194028. The cubic root of 40547331 is about 343.5479996233.

It can be divided in two parts, 405473 and 31, that added together give a palindrome (405504).

The spelling of 40547331 in words is "forty million, five hundred forty-seven thousand, three hundred thirty-one".