31313202133 has 8 divisors (see below), whose sum is σ = 32700628800. Its totient is φ = 29927940768.

The previous prime is 31313202017. The next prime is 31313202191. The reversal of 31313202133 is 33120231313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-31313202133 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 (31313203133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 511728 + ... + 569641.

It is an arithmetic number, because the mean of its divisors is an integer number (4087578600).

Almost surely, 2^31313202133 is an apocalyptic number.

It is an amenable number.

31313202133 is a deficient number, since it is larger than the sum of its proper divisors (1387426667).

31313202133 is a wasteful number, since it uses less digits than its factorization.

31313202133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082651.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 31313202133 its reverse (33120231313), we get a palindrome (64433433446).

The spelling of 31313202133 in words is "thirty-one billion, three hundred thirteen million, two hundred two thousand, one hundred thirty-three".