31103210021133 has 16 divisors (see below), whose sum is σ = 41738133963456. Its totient is φ = 20601898961280.

The previous prime is 31103210021129. The next prime is 31103210021159. The reversal of 31103210021133 is 33112001230113.

It is a happy number.

It is not a de Polignac number, because 31103210021133 - 2² = 31103210021129 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31103210021173) 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, 4083313 + ... + 8881433.

It is an arithmetic number, because the mean of its divisors is an integer number (2608633372716).

Almost surely, 2^{31103210021133} is an apocalyptic number.

It is an amenable number.

31103210021133 is a deficient number, since it is larger than the sum of its proper divisors (10634923942323).

31103210021133 is a wasteful number, since it uses less digits than its factorization.

31103210021133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4812044.

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

Adding to 31103210021133 its reverse (33112001230113), we get a palindrome (64215211251246).

The spelling of 31103210021133 in words is "thirty-one trillion, one hundred three billion, two hundred ten million, twenty-one thousand, one hundred thirty-three".