31030443243 has 12 divisors (see below), whose sum is σ = 44911581000. Its totient is φ = 20645502336.

The previous prime is 31030443221. The next prime is 31030443293. The reversal of 31030443243 is 34234403013.

31030443243 is a `hidden beast` number, since 31 + 0 + 304 + 4 + 324 + 3 = 666.

It is not a de Polignac number, because 31030443243 - 2⁹ = 31030442731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31030443293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3450246 + ... + 3459227.

It is an arithmetic number, because the mean of its divisors is an integer number (3742631750).

Almost surely, 2^31030443243 is an apocalyptic number.

31030443243 is a deficient number, since it is larger than the sum of its proper divisors (13881137757).

31030443243 is a wasteful number, since it uses less digits than its factorization.

31030443243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6909978 (or 6909975 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 31030443243 its reverse (34234403013), we get a palindrome (65264846256).

The spelling of 31030443243 in words is "thirty-one billion, thirty million, four hundred forty-three thousand, two hundred forty-three".