30213044761 has 3 divisors (see below), whose sum is σ = 30213218581. Its totient is φ = 30212870942.

The previous prime is 30213044737. The next prime is 30213044777. The reversal of 30213044761 is 16744031203.

The square root of 30213044761 is 173819.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 16744031203 = 271 ⋅61786093.

It is not a de Polignac number, because 30213044761 - 2¹⁹ = 30212520473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30213044461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 86910 + ... + 260728.

Almost surely, 2^30213044761 is an apocalyptic number.

30213044761 is the 173819-th square number.

30213044761 is the 86910-th centered octagonal number.

It is an amenable number.

30213044761 is a deficient number, since it is larger than the sum of its proper divisors (173820).

30213044761 is an frugal number, since it uses more digits than its factorization.

30213044761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347638 (or 173819 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

Adding to 30213044761 its reverse (16744031203), we get a palindrome (46957075964).

The spelling of 30213044761 in words is "thirty billion, two hundred thirteen million, forty-four thousand, seven hundred sixty-one".