40300312 has 16 divisors (see below), whose sum is σ = 81375840. Its totient is φ = 18600096.

The previous prime is 40300303. The next prime is 40300327. The reversal of 40300312 is 21300304.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 40300292 and 40300301.

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, 193648 + ... + 193855.

It is an arithmetic number, because the mean of its divisors is an integer number (5085990).

Almost surely, 2^40300312 is an apocalyptic number.

It is an amenable number.

40300312 is an abundant number, since it is smaller than the sum of its proper divisors (41075528).

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

40300312 is a wasteful number, since it uses less digits than its factorization.

40300312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387522 (or 387518 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 40300312 is about 6348.2526729802. The cubic root of 40300312 is about 342.8489334675.

Adding to 40300312 its reverse (21300304), we get a palindrome (61600616).

The spelling of 40300312 in words is "forty million, three hundred thousand, three hundred twelve".