31100123222132 has 12 divisors (see below), whose sum is σ = 54425254877700. Its totient is φ = 15550050399936.

The previous prime is 31100123222131. The next prime is 31100123222197. The reversal of 31100123222132 is 23122232100113.

It can be written as a sum of positive squares in 2 ways, for example, as 18881840664976 + 12218282557156 = 4345324^2 + 3495466^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31100123222098 and 31100123222107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31100123222131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8532488 + ... + 11619104.

It is an arithmetic number, because the mean of its divisors is an integer number (4535437906475).

Almost surely, 2^{31100123222132} is an apocalyptic number.

It is an amenable number.

31100123222132 is a deficient number, since it is larger than the sum of its proper divisors (23325131655568).

31100123222132 is a wasteful number, since it uses less digits than its factorization.

31100123222132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5605570 (or 5605568 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 31100123222132 its reverse (23122232100113), we get a palindrome (54222355322245).

The spelling of 31100123222132 in words is "thirty-one trillion, one hundred billion, one hundred twenty-three million, two hundred twenty-two thousand, one hundred thirty-two".