30013493 has 2 divisors, whose sum is σ = 30013494. Its totient is φ = 30013492.

The previous prime is 30013471. The next prime is 30013499. The reversal of 30013493 is 39431003.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29789764 + 223729 = 5458^2 + 473^2 .

It is an emirp because it is prime and its reverse (39431003) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30013493 - 2²⁰ = 28964917 is a prime.

It is a super-2 number, since 2×30013493² = 1801619524122098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30013499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15006746 + 15006747.

It is an arithmetic number, because the mean of its divisors is an integer number (15006747).

Almost surely, 2^30013493 is an apocalyptic number.

It is an amenable number.

30013493 is a deficient number, since it is larger than the sum of its proper divisors (1).

30013493 is an equidigital number, since it uses as much as digits as its factorization.

30013493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 30013493 is about 5478.4571733290. The cubic root of 30013493 is about 310.7698279333.

Adding to 30013493 its reverse (39431003), we get a palindrome (69444496).

The spelling of 30013493 in words is "thirty million, thirteen thousand, four hundred ninety-three".