30699223217 has 4 divisors (see below), whose sum is σ = 33060701940. Its totient is φ = 28337744496.

The previous prime is 30699223211. The next prime is 30699223279. The reversal of 30699223217 is 71232299603.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71232299603 = 449 ⋅158646547.

It can be written as a sum of positive squares in 2 ways, for example, as 3725759521 + 26973463696 = 61039^2 + 164236^2 .

It is a cyclic number.

It is not a de Polignac number, because 30699223217 - 2²⁶ = 30632114353 is a prime.

It is a super-2 number, since 2×30699223217² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30699223211) 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, 1180739342 + ... + 1180739367.

It is an arithmetic number, because the mean of its divisors is an integer number (8265175485).

Almost surely, 2^30699223217 is an apocalyptic number.

It is an amenable number.

30699223217 is a deficient number, since it is larger than the sum of its proper divisors (2361478723).

30699223217 is a wasteful number, since it uses less digits than its factorization.

30699223217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2361478722.

The product of its (nonzero) digits is 244944, while the sum is 44.

The spelling of 30699223217 in words is "thirty billion, six hundred ninety-nine million, two hundred twenty-three thousand, two hundred seventeen".