30696281 has 32 divisors (see below), whose sum is σ = 40009728. Its totient is φ = 22861440.

The previous prime is 30696241. The next prime is 30696287. The reversal of 30696281 is 18269603.

It is not a de Polignac number, because 30696281 - 2¹⁰ = 30695257 is a prime.

It is a super-2 number, since 2×30696281² = 1884523334461922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30696287) 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 31 ways as a sum of consecutive naturals, for example, 241640 + ... + 241766.

It is an arithmetic number, because the mean of its divisors is an integer number (1250304).

Almost surely, 2^30696281 is an apocalyptic number.

It is an amenable number.

30696281 is a deficient number, since it is larger than the sum of its proper divisors (9313447).

30696281 is a wasteful number, since it uses less digits than its factorization.

30696281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 30696281 is about 5540.4224568168. The cubic root of 30696281 is about 313.1087857257.

The spelling of 30696281 in words is "thirty million, six hundred ninety-six thousand, two hundred eighty-one".