30313688 has 16 divisors (see below), whose sum is σ = 57617880. Its totient is φ = 14948928.

The previous prime is 30313687. The next prime is 30313697. The reversal of 30313688 is 88631303.

It is a happy number.

It is a super-2 number, since 2×30313688² = 1837839360322688, which contains 22 as substring.

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 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, 25370 + ... + 26537.

Almost surely, 2^30313688 is an apocalyptic number.

It is an amenable number.

30313688 is a deficient number, since it is larger than the sum of its proper divisors (27304192).

30313688 is a wasteful number, since it uses less digits than its factorization.

30313688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51986 (or 51982 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 30313688 is about 5505.7867739316. The cubic root of 30313688 is about 311.8024993755.

The spelling of 30313688 in words is "thirty million, three hundred thirteen thousand, six hundred eighty-eight".