40061312 has 16 divisors (see below), whose sum is σ = 79809900. Its totient is φ = 20030592.

The previous prime is 40061311. The next prime is 40061339. The reversal of 40061312 is 21316004.

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×40061312² = 3209817438322688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40061311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156362 + ... + 156617.

Almost surely, 2^40061312 is an apocalyptic number.

It is an amenable number.

40061312 is a deficient number, since it is larger than the sum of its proper divisors (39748588).

40061312 is an equidigital number, since it uses as much as digits as its factorization.

40061312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312993 (or 312981 counting only the distinct ones).

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

The square root of 40061312 is about 6329.4006035327. The cubic root of 40061312 is about 342.1698368745.

Adding to 40061312 its reverse (21316004), we get a palindrome (61377316).

The spelling of 40061312 in words is "forty million, sixty-one thousand, three hundred twelve".