31321103133 has 16 divisors (see below), whose sum is σ = 41858078976. Its totient is φ = 20832490560.

The previous prime is 31321103129. The next prime is 31321103201. The reversal of 31321103133 is 33130112313.

It is not a de Polignac number, because 31321103133 - 2² = 31321103129 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31321103633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2401516 + ... + 2414522.

It is an arithmetic number, because the mean of its divisors is an integer number (2616129936).

Almost surely, 2^31321103133 is an apocalyptic number.

It is an amenable number.

31321103133 is a deficient number, since it is larger than the sum of its proper divisors (10536975843).

31321103133 is a wasteful number, since it uses less digits than its factorization.

31321103133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14804.

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 31321103133 its reverse (33130112313), we get a palindrome (64451215446).

The spelling of 31321103133 in words is "thirty-one billion, three hundred twenty-one million, one hundred three thousand, one hundred thirty-three".