30402013 has 2 divisors, whose sum is σ = 30402014. Its totient is φ = 30402012.

The previous prime is 30401981. The next prime is 30402023. The reversal of 30402013 is 31020403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30063289 + 338724 = 5483^2 + 582^2 .

It is a cyclic number.

It is not a de Polignac number, because 30402013 - 2⁵ = 30401981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30401984 and 30402002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30402023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15201006 + 15201007.

It is an arithmetic number, because the mean of its divisors is an integer number (15201007).

Almost surely, 2^30402013 is an apocalyptic number.

It is an amenable number.

30402013 is a deficient number, since it is larger than the sum of its proper divisors (1).

30402013 is an equidigital number, since it uses as much as digits as its factorization.

30402013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 30402013 is about 5513.8020457757. The cubic root of 30402013 is about 312.1050387349.

Adding to 30402013 its reverse (31020403), we get a palindrome (61422416).

The spelling of 30402013 in words is "thirty million, four hundred two thousand, thirteen".