30824840781 has 24 divisors (see below), whose sum is σ = 51143773824. Its totient is φ = 17524775520.

The previous prime is 30824840773. The next prime is 30824840801. The reversal of 30824840781 is 18704842803.

It is not a de Polignac number, because 30824840781 - 2³ = 30824840773 is a prime.

It is a super-2 number, since 2×30824840781² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30824840381) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1229425 + ... + 1254246.

It is an arithmetic number, because the mean of its divisors is an integer number (2130990576).

Almost surely, 2^30824840781 is an apocalyptic number.

It is an amenable number.

30824840781 is a deficient number, since it is larger than the sum of its proper divisors (20318933043).

30824840781 is a wasteful number, since it uses less digits than its factorization.

30824840781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2483881 (or 2483878 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 45.

The spelling of 30824840781 in words is "thirty billion, eight hundred twenty-four million, eight hundred forty thousand, seven hundred eighty-one".