30349953 has 12 divisors (see below), whose sum is σ = 45024148. Its totient is φ = 19686240.

The previous prime is 30349951. The next prime is 30349993. The reversal of 30349953 is 35994303.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15233409 + 15116544 = 3903^2 + 3888^2 .

It is not a de Polignac number, because 30349953 - 2¹ = 30349951 is a prime.

It is a super-2 number, since 2×30349953² = 1842239294204418, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30349951) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45238 + ... + 45903.

Almost surely, 2^30349953 is an apocalyptic number.

It is an amenable number.

30349953 is a deficient number, since it is larger than the sum of its proper divisors (14674195).

30349953 is a wasteful number, since it uses less digits than its factorization.

30349953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91184 (or 91181 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 36.

The square root of 30349953 is about 5509.0791426517. The cubic root of 30349953 is about 311.9267887887.

The spelling of 30349953 in words is "thirty million, three hundred forty-nine thousand, nine hundred fifty-three".