40303312 has 20 divisors (see below), whose sum is σ = 89243296. Its totient is φ = 17272800.

The previous prime is 40303303. The next prime is 40303327. The reversal of 40303312 is 21330304.

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 3 ways as a sum of consecutive naturals, for example, 179814 + ... + 180037.

Almost surely, 2^40303312 is an apocalyptic number.

It is an amenable number.

40303312 is an abundant number, since it is smaller than the sum of its proper divisors (48939984).

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

40303312 is a wasteful number, since it uses less digits than its factorization.

40303312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359866 (or 359860 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 40303312 is about 6348.4889540740. The cubic root of 40303312 is about 342.8574406082.

Adding to 40303312 its reverse (21330304), we get a palindrome (61633616).

The spelling of 40303312 in words is "forty million, three hundred three thousand, three hundred twelve".