40031612 has 12 divisors (see below), whose sum is σ = 70256256. Its totient is φ = 19958400.

The previous prime is 40031611. The next prime is 40031657. The reversal of 40031612 is 21613004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40031611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12764 + ... + 15587.

It is an arithmetic number, because the mean of its divisors is an integer number (5854688).

Almost surely, 2^40031612 is an apocalyptic number.

It is an amenable number.

40031612 is a deficient number, since it is larger than the sum of its proper divisors (30224644).

40031612 is a wasteful number, since it uses less digits than its factorization.

40031612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28708 (or 28706 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 40031612 is about 6327.0539747974. The cubic root of 40031612 is about 342.0852585450.

Adding to 40031612 its reverse (21613004), we get a palindrome (61644616).

The spelling of 40031612 in words is "forty million, thirty-one thousand, six hundred twelve".