31301332133 has 2 divisors, whose sum is σ = 31301332134. Its totient is φ = 31301332132.

The previous prime is 31301332099. The next prime is 31301332157. The reversal of 31301332133 is 33123310313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30414662404 + 886669729 = 174398^2 + 29777^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31301332133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31301332099 and 31301332108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31301362133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15650666066 + 15650666067.

It is an arithmetic number, because the mean of its divisors is an integer number (15650666067).

Almost surely, 2^31301332133 is an apocalyptic number.

It is an amenable number.

31301332133 is a deficient number, since it is larger than the sum of its proper divisors (1).

31301332133 is an equidigital number, since it uses as much as digits as its factorization.

31301332133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 23.

Adding to 31301332133 its reverse (33123310313), we get a palindrome (64424642446).

The spelling of 31301332133 in words is "thirty-one billion, three hundred one million, three hundred thirty-two thousand, one hundred thirty-three".