31304022133 has 6 divisors (see below), whose sum is σ = 31738724034. Its totient is φ = 30875194656.

The previous prime is 31304022083. The next prime is 31304022157. The reversal of 31304022133 is 33122040313.

It can be written as a sum of positive squares in 3 ways, for example, as 235376964 + 31068645169 = 15342^2 + 176263^2 .

It is not a de Polignac number, because 31304022133 - 2²¹ = 31301924981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31304022433) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2931810 + ... + 2942467.

It is an arithmetic number, because the mean of its divisors is an integer number (5289787339).

Almost surely, 2^31304022133 is an apocalyptic number.

It is an amenable number.

31304022133 is a deficient number, since it is larger than the sum of its proper divisors (434701901).

31304022133 is an frugal number, since it uses more digits than its factorization.

31304022133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5874423 (or 5874350 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 31304022133 its reverse (33122040313), we get a palindrome (64426062446).

The spelling of 31304022133 in words is "thirty-one billion, three hundred four million, twenty-two thousand, one hundred thirty-three".