30012312040 has 32 divisors (see below), whose sum is σ = 71499921480. Its totient is φ = 11298752512.

The previous prime is 30012312017. The next prime is 30012312041. The reversal of 30012312040 is 4021321003.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19860137476 + 10152174564 = 140926^2 + 100758^2 .

It is not an unprimeable number, because it can be changed into a prime (30012312041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22067197 + ... + 22068556.

Almost surely, 2^30012312040 is an apocalyptic number.

It is an amenable number.

30012312040 is an abundant number, since it is smaller than the sum of its proper divisors (41487609440).

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

30012312040 is a wasteful number, since it uses less digits than its factorization.

30012312040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44135781 (or 44135777 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 30012312040 its reverse (4021321003), we get a palindrome (34033633043).

The spelling of 30012312040 in words is "thirty billion, twelve million, three hundred twelve thousand, forty".