31222133000 has 32 divisors (see below), whose sum is σ = 73059793560. Its totient is φ = 12488852800.

The previous prime is 31222132993. The next prime is 31222133017. The reversal of 31222133000 is 33122213.

It can be written as a sum of positive squares in 4 ways, for example, as 17228662564 + 13993470436 = 131258^2 + 118294^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31222133000.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15610067 + ... + 15612066.

Almost surely, 2^31222133000 is an apocalyptic number.

It is an amenable number.

31222133000 is an abundant number, since it is smaller than the sum of its proper divisors (41837660560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31222133000 is a wasteful number, since it uses less digits than its factorization.

31222133000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31222154 (or 31222140 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 31222133000 its reverse (33122213), we get a palindrome (31255255213).

It can be divided in two parts, 3122213 and 3000, that added together give a palindrome (3125213).

The spelling of 31222133000 in words is "thirty-one billion, two hundred twenty-two million, one hundred thirty-three thousand".