31321211133 has 8 divisors (see below), whose sum is σ = 42290243200. Its totient is φ = 20616493248.

The previous prime is 31321211113. The next prime is 31321211191. The reversal of 31321211133 is 33111212313.

It is a happy number.

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

It is not a de Polignac number, because 31321211133 - 2¹² = 31321207037 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 (31321211113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66078268 + ... + 66078741.

It is an arithmetic number, because the mean of its divisors is an integer number (5286280400).

Almost surely, 2^31321211133 is an apocalyptic number.

It is an amenable number.

31321211133 is a deficient number, since it is larger than the sum of its proper divisors (10969032067).

31321211133 is a wasteful number, since it uses less digits than its factorization.

31321211133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132157091.

The product of its digits is 324, while the sum is 21.

Adding to 31321211133 its reverse (33111212313), we get a palindrome (64432423446).

The spelling of 31321211133 in words is "thirty-one billion, three hundred twenty-one million, two hundred eleven thousand, one hundred thirty-three".