30513013 has 4 divisors (see below), whose sum is σ = 30524128. Its totient is φ = 30501900.

The previous prime is 30512987. The next prime is 30513047. The reversal of 30513013 is 31031503.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 31031503 = 19 ⋅1633237.

It is a cyclic number.

It is not a de Polignac number, because 30513013 - 2¹³ = 30504821 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 (30517013) 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, 1870 + ... + 8032.

It is an arithmetic number, because the mean of its divisors is an integer number (7631032).

Almost surely, 2^30513013 is an apocalyptic number.

It is an amenable number.

30513013 is a deficient number, since it is larger than the sum of its proper divisors (11115).

30513013 is an equidigital number, since it uses as much as digits as its factorization.

30513013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11114.

The product of its (nonzero) digits is 135, while the sum is 16.

The square root of 30513013 is about 5523.8585246185. The cubic root of 30513013 is about 312.4844169296.

Adding to 30513013 its reverse (31031503), we get a palindrome (61544516).

The spelling of 30513013 in words is "thirty million, five hundred thirteen thousand, thirteen".