30697229 has 8 divisors (see below), whose sum is σ = 31448952. Its totient is φ = 29952000.

The previous prime is 30697207. The next prime is 30697253. The reversal of 30697229 is 92279603.

It can be written as a sum of positive squares in 4 ways, for example, as 4452100 + 26245129 = 2110^2 + 5123^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30697229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30697192 and 30697201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30697729) 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 7 ways as a sum of consecutive naturals, for example, 8729 + ... + 11729.

It is an arithmetic number, because the mean of its divisors is an integer number (3931119).

Almost surely, 2^30697229 is an apocalyptic number.

It is an amenable number.

30697229 is a deficient number, since it is larger than the sum of its proper divisors (751723).

30697229 is a wasteful number, since it uses less digits than its factorization.

30697229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3247.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 30697229 is about 5540.5080091992. The cubic root of 30697229 is about 313.1120089617.

The spelling of 30697229 in words is "thirty million, six hundred ninety-seven thousand, two hundred twenty-nine".