30321253 has 8 divisors (see below), whose sum is σ = 30740480. Its totient is φ = 29905200.

The previous prime is 30321233. The next prime is 30321257. The reversal of 30321253 is 35212303.

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-30321253 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30321253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30321257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23068 + ... + 24346.

It is an arithmetic number, because the mean of its divisors is an integer number (3842560).

Almost surely, 2^30321253 is an apocalyptic number.

It is an amenable number.

30321253 is a deficient number, since it is larger than the sum of its proper divisors (419227).

30321253 is a wasteful number, since it uses less digits than its factorization.

30321253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1587.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 30321253 is about 5506.4737355226. The cubic root of 30321253 is about 311.8284347408.

Adding to 30321253 its reverse (35212303), we get a palindrome (65533556).

The spelling of 30321253 in words is "thirty million, three hundred twenty-one thousand, two hundred fifty-three".