40231686 has 16 divisors (see below), whose sum is σ = 87778368. Its totient is φ = 12191400.

The previous prime is 40231657. The next prime is 40231693. The reversal of 40231686 is 68613204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304720 + ... + 304851.

It is an arithmetic number, because the mean of its divisors is an integer number (5486148).

Almost surely, 2^40231686 is an apocalyptic number.

40231686 is an abundant number, since it is smaller than the sum of its proper divisors (47546682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40231686 is a wasteful number, since it uses less digits than its factorization.

40231686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609587.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 40231686 is about 6342.8452606066. The cubic root of 40231686 is about 342.6542143897.

The spelling of 40231686 in words is "forty million, two hundred thirty-one thousand, six hundred eighty-six".