31133221010 has 8 divisors (see below), whose sum is σ = 56039797836. Its totient is φ = 12453288400.

The previous prime is 31133221003. The next prime is 31133221037. The reversal of 31133221010 is 1012233113.

It can be written as a sum of positive squares in 2 ways, for example, as 29826326209 + 1306894801 = 172703^2 + 36151^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 31133221010.

It is an unprimeable number.

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, 1556661041 + ... + 1556661060.

Almost surely, 2^31133221010 is an apocalyptic number.

31133221010 is a deficient number, since it is larger than the sum of its proper divisors (24906576826).

31133221010 is a wasteful number, since it uses less digits than its factorization.

31133221010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3113322108.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31133221010 its reverse (1012233113), we get a palindrome (32145454123).

The spelling of 31133221010 in words is "thirty-one billion, one hundred thirty-three million, two hundred twenty-one thousand, ten".