40987331 has 16 divisors (see below), whose sum is σ = 52351488. Its totient is φ = 31156800.

The previous prime is 40987321. The next prime is 40987339. The reversal of 40987331 is 13378904.

40987331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 40987331 - 2¹⁰ = 40986307 is a prime.

It is a super-2 number, since 2×40987331² = 3359922605007122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40987291 and 40987300.

It is not an unprimeable number, because it can be changed into a prime (40987339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3335 + ... + 9648.

It is an arithmetic number, because the mean of its divisors is an integer number (3271968).

Almost surely, 2^40987331 is an apocalyptic number.

40987331 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

40987331 is a deficient number, since it is larger than the sum of its proper divisors (11364157).

40987331 is a wasteful number, since it uses less digits than its factorization.

40987331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13042.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 40987331 is about 6402.1348783043. The cubic root of 40987331 is about 344.7862037419.

It can be divided in two parts, 409873 and 31, that added together give a palindrome (409904).

The spelling of 40987331 in words is "forty million, nine hundred eighty-seven thousand, three hundred thirty-one".