30313680 has 40 divisors (see below), whose sum is σ = 93973152. Its totient is φ = 8083584.

The previous prime is 30313651. The next prime is 30313687. The reversal of 30313680 is 8631303.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 30313680.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30313687) 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, 62914 + ... + 63393.

Almost surely, 2^30313680 is an apocalyptic number.

30313680 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30313680 is an abundant number, since it is smaller than the sum of its proper divisors (63659472).

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

30313680 is a wasteful number, since it uses less digits than its factorization.

30313680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126323 (or 126317 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 30313680 is about 5505.7860474232. The cubic root of 30313680 is about 311.8024719465.

Adding to 30313680 its reverse (8631303), we get a palindrome (38944983).

The spelling of 30313680 in words is "thirty million, three hundred thirteen thousand, six hundred eighty".