30315256 has 16 divisors (see below), whose sum is σ = 56915640. Its totient is φ = 15137760.

The previous prime is 30315253. The next prime is 30315293. The reversal of 30315256 is 65251303.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 30315256.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30315253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5515 + ... + 9541.

Almost surely, 2^30315256 is an apocalyptic number.

It is an amenable number.

30315256 is a deficient number, since it is larger than the sum of its proper divisors (26600384).

30315256 is a wasteful number, since it uses less digits than its factorization.

30315256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4974 (or 4970 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 30315256 is about 5505.9291677246. The cubic root of 30315256 is about 311.8078753615.

Adding to 30315256 its reverse (65251303), we get a palindrome (95566559).

The spelling of 30315256 in words is "thirty million, three hundred fifteen thousand, two hundred fifty-six".