30472331 has 4 divisors (see below), whose sum is σ = 30632064. Its totient is φ = 30312600.

The previous prime is 30472327. The next prime is 30472339. The reversal of 30472331 is 13327403.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30472331 - 2² = 30472327 is a prime.

It is a super-3 number, since 3×30472331³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30472297 and 30472306.

It is not an unprimeable number, because it can be changed into a prime (30472339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79580 + ... + 79961.

It is an arithmetic number, because the mean of its divisors is an integer number (7658016).

Almost surely, 2^30472331 is an apocalyptic number.

30472331 is a deficient number, since it is larger than the sum of its proper divisors (159733).

30472331 is a wasteful number, since it uses less digits than its factorization.

30472331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159732.

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 30472331 is about 5520.1749066492. The cubic root of 30472331 is about 312.3454800881.

Adding to 30472331 its reverse (13327403), we get a palindrome (43799734).

It can be divided in two parts, 30472 and 331, that added together give a palindrome (30803).

The spelling of 30472331 in words is "thirty million, four hundred seventy-two thousand, three hundred thirty-one".