30680675281 has 9 divisors (see below), whose sum is σ = 30989020699. Its totient is φ = 30375373144.

The previous prime is 30680675261. The next prime is 30680675297. The reversal of 30680675281 is 18257608603.

The square root of 30680675281 is 175159.

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

It can be written as a sum of positive squares in only one way, i.e., 929945025 + 29750730256 = 30495^2 + 172484^2 .

It is not a de Polignac number, because 30680675281 - 2²⁵ = 30647120849 is a prime.

It is a super-2 number, since 2×30680675281² (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 (30680675261) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 18741195 + ... + 18742831.

Almost surely, 2^30680675281 is an apocalyptic number.

30680675281 is the 175159-th square number.

30680675281 is the 87580-th centered octagonal number.

It is an amenable number.

30680675281 is a deficient number, since it is larger than the sum of its proper divisors (308345418).

30680675281 is an frugal number, since it uses more digits than its factorization.

30680675281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3488 (or 1744 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 46.

The spelling of 30680675281 in words is "thirty billion, six hundred eighty million, six hundred seventy-five thousand, two hundred eighty-one".