30772223 has 4 divisors (see below), whose sum is σ = 30794328. Its totient is φ = 30750120.

The previous prime is 30772213. The next prime is 30772241. The reversal of 30772223 is 32227703.

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 30772223 - 2¹⁸ = 30510079 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30772192 and 30772201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30772213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8813 + ... + 11798.

It is an arithmetic number, because the mean of its divisors is an integer number (7698582).

Almost surely, 2^30772223 is an apocalyptic number.

30772223 is a deficient number, since it is larger than the sum of its proper divisors (22105).

30772223 is a wasteful number, since it uses less digits than its factorization.

30772223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22104.

The product of its (nonzero) digits is 3528, while the sum is 26.

The square root of 30772223 is about 5547.2716717320. The cubic root of 30772223 is about 313.3667814250.

Adding to 30772223 its reverse (32227703), we get a palindrome (62999926).

The spelling of 30772223 in words is "thirty million, seven hundred seventy-two thousand, two hundred twenty-three".