31210001133 has 24 divisors (see below), whose sum is σ = 43875793728. Its totient is φ = 19696444416.

The previous prime is 31210001129. The next prime is 31210001177. The reversal of 31210001133 is 33110001213.

It is not a de Polignac number, because 31210001133 - 2² = 31210001129 is a prime.

It is a super-2 number, since 2×31210001133² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31210006133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 625185 + ... + 673257.

It is an arithmetic number, because the mean of its divisors is an integer number (1828158072).

Almost surely, 2^31210001133 is an apocalyptic number.

It is an amenable number.

31210001133 is a deficient number, since it is larger than the sum of its proper divisors (12665792595).

31210001133 is an equidigital number, since it uses as much as digits as its factorization.

31210001133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48293 (or 48196 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 31210001133 its reverse (33110001213), we get a palindrome (64320002346).

The spelling of 31210001133 in words is "thirty-one billion, two hundred ten million, one thousand, one hundred thirty-three".