31743030160 has 20 divisors (see below), whose sum is σ = 73802545308. Its totient is φ = 12697212032.

The previous prime is 31743030149. The next prime is 31743030161. The reversal of 31743030160 is 6103034713.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 25207277824 + 6535752336 = 158768^2 + 80844^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (31743030161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198393859 + ... + 198394018.

Almost surely, 2^31743030160 is an apocalyptic number.

It is an amenable number.

31743030160 is an abundant number, since it is smaller than the sum of its proper divisors (42059515148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31743030160 is a wasteful number, since it uses less digits than its factorization.

31743030160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396787890 (or 396787884 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 28.

Adding to 31743030160 its reverse (6103034713), we get a palindrome (37846064873).

The spelling of 31743030160 in words is "thirty-one billion, seven hundred forty-three million, thirty thousand, one hundred sixty".