30861413 has 6 divisors (see below), whose sum is σ = 33922182. Its totient is φ = 28055720.

The previous prime is 30861359. The next prime is 30861431. The reversal of 30861413 is 31416803.

It can be written as a sum of positive squares in only one way, i.e., 27646564 + 3214849 = 5258^2 + 1793^2 .

It is not a de Polignac number, because 30861413 - 2⁶ = 30861349 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30861013) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 127406 + ... + 127647.

It is an arithmetic number, because the mean of its divisors is an integer number (5653697).

Almost surely, 2^30861413 is an apocalyptic number.

It is an amenable number.

30861413 is a deficient number, since it is larger than the sum of its proper divisors (3060769).

30861413 is a wasteful number, since it uses less digits than its factorization.

30861413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255075 (or 255064 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 30861413 is about 5555.3049421251. The cubic root of 30861413 is about 313.6692427721.

The spelling of 30861413 in words is "thirty million, eight hundred sixty-one thousand, four hundred thirteen".