30102513 has 24 divisors (see below), whose sum is σ = 47693952. Its totient is φ = 16831584.

The previous prime is 30102511. The next prime is 30102521. The reversal of 30102513 is 31520103.

It is a happy number.

It is not a de Polignac number, because 30102513 - 2¹ = 30102511 is a prime.

It is a super-2 number, since 2×30102513² = 1812322577830338, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30102492 and 30102501.

It is not an unprimeable number, because it can be changed into a prime (30102511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4731 + ... + 9087.

It is an arithmetic number, because the mean of its divisors is an integer number (1987248).

Almost surely, 2^30102513 is an apocalyptic number.

It is an amenable number.

30102513 is a deficient number, since it is larger than the sum of its proper divisors (17591439).

30102513 is a wasteful number, since it uses less digits than its factorization.

30102513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4421 (or 4414 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 30102513 is about 5486.5757080350. The cubic root of 30102513 is about 311.0767723674.

Adding to 30102513 its reverse (31520103), we get a palindrome (61622616).

The spelling of 30102513 in words is "thirty million, one hundred two thousand, five hundred thirteen".