30312340 has 12 divisors (see below), whose sum is σ = 63655956. Its totient is φ = 12124928.

The previous prime is 30312323. The next prime is 30312383. The reversal of 30312340 is 4321303.

It can be written as a sum of positive squares in 2 ways, for example, as 23931664 + 6380676 = 4892^2 + 2526^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 757789 + ... + 757828.

It is an arithmetic number, because the mean of its divisors is an integer number (5304663).

Almost surely, 2^30312340 is an apocalyptic number.

It is an amenable number.

30312340 is an abundant number, since it is smaller than the sum of its proper divisors (33343616).

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

30312340 is a wasteful number, since it uses less digits than its factorization.

30312340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1515626 (or 1515624 counting only the distinct ones).

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

The square root of 30312340 is about 5505.6643559156. The cubic root of 30312340 is about 311.7978775250.

Adding to 30312340 its reverse (4321303), we get a palindrome (34633643).

The spelling of 30312340 in words is "thirty million, three hundred twelve thousand, three hundred forty".