31132201211123 has 24 divisors (see below), whose sum is σ = 33103948122000. Its totient is φ = 29268822933504.

The previous prime is 31132201211071. The next prime is 31132201211179. The reversal of 31132201211123 is 32111210223113.

It is a happy number.

It is not a de Polignac number, because 31132201211123 - 2⁸ = 31132201210867 is a prime.

It is a super-2 number, since 2×31132201211123² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31132201211723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14935763 + ... + 16892051.

It is an arithmetic number, because the mean of its divisors is an integer number (1379331171750).

Almost surely, 2^{31132201211123} is an apocalyptic number.

31132201211123 is a deficient number, since it is larger than the sum of its proper divisors (1971746910877).

31132201211123 is a wasteful number, since it uses less digits than its factorization.

31132201211123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1956851 (or 1956828 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 31132201211123 its reverse (32111210223113), we get a palindrome (63243411434236).

The spelling of 31132201211123 in words is "thirty-one trillion, one hundred thirty-two billion, two hundred one million, two hundred eleven thousand, one hundred twenty-three".