30213405 has 40 divisors (see below), whose sum is σ = 54560352. Its totient is φ = 16061328.

The previous prime is 30213397. The next prime is 30213413. The reversal of 30213405 is 50431203.

It is an interprime number because it is at equal distance from previous prime (30213397) and next prime (30213413).

It is not a de Polignac number, because 30213405 - 2³ = 30213397 is a prime.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 98262 + ... + 98568.

Almost surely, 2^30213405 is an apocalyptic number.

It is an amenable number.

30213405 is a deficient number, since it is larger than the sum of its proper divisors (24346947).

30213405 is an frugal number, since it uses more digits than its factorization.

30213405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339 (or 315 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 30213405 is about 5496.6721750528. The cubic root of 30213405 is about 311.4582870612.

Adding to 30213405 its reverse (50431203), we get a palindrome (80644608).

The spelling of 30213405 in words is "thirty million, two hundred thirteen thousand, four hundred five".