30502273201 has 3 divisors (see below), whose sum is σ = 30502447851. Its totient is φ = 30502098552.

The previous prime is 30502273199. The next prime is 30502273211. The reversal of 30502273201 is 10237220503.

The square root of 30502273201 is 174649.

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: 10237220503 = 719 ⋅14238137.

It can be written as a sum of positive squares in only one way, i.e., 3198015601 + 27304257600 = 56551^2 + 165240^2 .

It is not a de Polignac number, because 30502273201 - 2¹ = 30502273199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30502273211) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 87325 + ... + 261973.

It is an arithmetic number, because the mean of its divisors is an integer number (10167482617).

Almost surely, 2^30502273201 is an apocalyptic number.

30502273201 is the 174649-th square number.

30502273201 is the 87325-th centered octagonal number.

It is an amenable number.

30502273201 is a deficient number, since it is larger than the sum of its proper divisors (174650).

30502273201 is an frugal number, since it uses more digits than its factorization.

30502273201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349298 (or 174649 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 25.

Multiplying 30502273201 by its sum of digits (25), we get a square (762556830025 = 873245²).

Adding to 30502273201 its reverse (10237220503), we get a palindrome (40739493704).

The spelling of 30502273201 in words is "thirty billion, five hundred two million, two hundred seventy-three thousand, two hundred one".