40051312 has 40 divisors (see below), whose sum is σ = 88983392. Its totient is φ = 17107200.

The previous prime is 40051309. The next prime is 40051339. The reversal of 40051312 is 21315004.

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 60262 + ... + 60922.

Almost surely, 2^40051312 is an apocalyptic number.

It is an amenable number.

40051312 is an abundant number, since it is smaller than the sum of its proper divisors (48932080).

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

40051312 is a wasteful number, since it uses less digits than its factorization.

40051312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217 (or 1211 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 40051312 is about 6328.6105900110. The cubic root of 40051312 is about 342.1413639918.

Adding to 40051312 its reverse (21315004), we get a palindrome (61366316).

The spelling of 40051312 in words is "forty million, fifty-one thousand, three hundred twelve".