30361421 has 8 divisors (see below), whose sum is σ = 31075704. Its totient is φ = 29652480.

The previous prime is 30361417. The next prime is 30361427. The reversal of 30361421 is 12416303.

It can be written as a sum of positive squares in 4 ways, for example, as 9302500 + 21058921 = 3050^2 + 4589^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30361421 - 2² = 30361417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30361393 and 30361402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30361427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11585 + ... + 13961.

It is an arithmetic number, because the mean of its divisors is an integer number (3884463).

Almost surely, 2^30361421 is an apocalyptic number.

It is an amenable number.

30361421 is a deficient number, since it is larger than the sum of its proper divisors (714283).

30361421 is a wasteful number, since it uses less digits than its factorization.

30361421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2671.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 30361421 is about 5510.1198716543. The cubic root of 30361421 is about 311.9660719462.

Adding to 30361421 its reverse (12416303), we get a palindrome (42777724).

The spelling of 30361421 in words is "thirty million, three hundred sixty-one thousand, four hundred twenty-one".