30311690 has 8 divisors (see below), whose sum is σ = 54561060. Its totient is φ = 12124672.

The previous prime is 30311651. The next prime is 30311711. The reversal of 30311690 is 9611303.

It can be written as a sum of positive squares in 2 ways, for example, as 26697889 + 3613801 = 5167^2 + 1901^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×30311690² = 1837597101312200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1515575 + ... + 1515594.

Almost surely, 2^30311690 is an apocalyptic number.

30311690 is a deficient number, since it is larger than the sum of its proper divisors (24249370).

30311690 is a wasteful number, since it uses less digits than its factorization.

30311690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3031176.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 30311690 is about 5505.6053254842. The cubic root of 30311690 is about 311.7956488390.

Adding to 30311690 its reverse (9611303), we get a palindrome (39922993).

The spelling of 30311690 in words is "thirty million, three hundred eleven thousand, six hundred ninety".