30643461236 has 12 divisors (see below), whose sum is σ = 53670129828. Its totient is φ = 15309138432.

The previous prime is 30643461227. The next prime is 30643461257. The reversal of 30643461236 is 63216434603.

It can be written as a sum of positive squares in 2 ways, for example, as 19267105636 + 11376355600 = 138806^2 + 106660^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30643461236.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3142571 + ... + 3152306.

It is an arithmetic number, because the mean of its divisors is an integer number (4472510819).

Almost surely, 2^30643461236 is an apocalyptic number.

It is an amenable number.

30643461236 is a deficient number, since it is larger than the sum of its proper divisors (23026668592).

30643461236 is a wasteful number, since it uses less digits than its factorization.

30643461236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6296098 (or 6296096 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 38.

Adding to 30643461236 its reverse (63216434603), we get a palindrome (93859895839).

The spelling of 30643461236 in words is "thirty billion, six hundred forty-three million, four hundred sixty-one thousand, two hundred thirty-six".