30963013 has 4 divisors (see below), whose sum is σ = 30977548. Its totient is φ = 30948480.

The previous prime is 30962983. The next prime is 30963041. The reversal of 30963013 is 31036903.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31036903 = 251 ⋅123653.

It can be written as a sum of positive squares in 2 ways, for example, as 13264164 + 17698849 = 3642^2 + 4207^2 .

It is a cyclic number.

It is not a de Polignac number, because 30963013 - 2²¹ = 28865861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30964013) 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 3 ways as a sum of consecutive naturals, for example, 3378 + ... + 8563.

It is an arithmetic number, because the mean of its divisors is an integer number (7744387).

Almost surely, 2^30963013 is an apocalyptic number.

It is an amenable number.

30963013 is a deficient number, since it is larger than the sum of its proper divisors (14535).

30963013 is a wasteful number, since it uses less digits than its factorization.

30963013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14534.

The product of its (nonzero) digits is 1458, while the sum is 25.

The square root of 30963013 is about 5564.4418408318. The cubic root of 30963013 is about 314.0130797694.

Adding to 30963013 its reverse (31036903), we get a palindrome (61999916).

The spelling of 30963013 in words is "thirty million, nine hundred sixty-three thousand, thirteen".