31033221001232 has 40 divisors (see below), whose sum is σ = 63881292567000. Its totient is φ = 14576648067072.

The previous prime is 31033221001103. The next prime is 31033221001241. The reversal of 31033221001232 is 23210012233013.

It can be written as a sum of positive squares in 4 ways, for example, as 5546232241936 + 25486988759296 = 2355044^2 + 5048464^2 .

It is a super-2 number, since 2×31033221001232² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31033221001198 and 31033221001207.

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 7 ways as a sum of consecutive naturals, for example, 903792857 + ... + 903827192.

It is an arithmetic number, because the mean of its divisors is an integer number (1597032314175).

Almost surely, 2^{31033221001232} is an apocalyptic number.

It is an amenable number.

31033221001232 is an abundant number, since it is smaller than the sum of its proper divisors (32848071565768).

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

31033221001232 is a wasteful number, since it uses less digits than its factorization.

31033221001232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1807620123 (or 1807620117 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 31033221001232 its reverse (23210012233013), we get a palindrome (54243233234245).

The spelling of 31033221001232 in words is "thirty-one trillion, thirty-three billion, two hundred twenty-one million, one thousand, two hundred thirty-two".