40231995 has 16 divisors (see below), whose sum is σ = 64523040. Its totient is φ = 21406464.

The previous prime is 40231993. The next prime is 40231999. The reversal of 40231995 is 59913204.

It is not a de Polignac number, because 40231995 - 2¹ = 40231993 is a prime.

It is a super-2 number, since 2×40231995² = 3237226843360050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40231993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3921 + ... + 9789.

It is an arithmetic number, because the mean of its divisors is an integer number (4032690).

Almost surely, 2^40231995 is an apocalyptic number.

40231995 is a deficient number, since it is larger than the sum of its proper divisors (24291045).

40231995 is a wasteful number, since it uses less digits than its factorization.

40231995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6334.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 40231995 is about 6342.8696187136. The cubic root of 40231995 is about 342.6550916409.

It can be divided in two parts, 4023199 and 5, that added together give a palindrome (4023204).

The spelling of 40231995 in words is "forty million, two hundred thirty-one thousand, nine hundred ninety-five".