30140312 has 8 divisors (see below), whose sum is σ = 56513100. Its totient is φ = 15070152.

The previous prime is 30140239. The next prime is 30140321. The reversal of 30140312 is 21304103.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1883762 + ... + 1883777.

Almost surely, 2^30140312 is an apocalyptic number.

It is an amenable number.

30140312 is a deficient number, since it is larger than the sum of its proper divisors (26372788).

30140312 is a wasteful number, since it uses less digits than its factorization.

30140312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3767545 (or 3767541 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 30140312 is about 5490.0193077985. The cubic root of 30140312 is about 311.2069217758.

Adding to 30140312 its reverse (21304103), we get a palindrome (51444415).

The spelling of 30140312 in words is "thirty million, one hundred forty thousand, three hundred twelve".