31333100000 has 72 divisors (see below), whose sum is σ = 77104111896. Its totient is φ = 12533200000.

The previous prime is 31333099999. The next prime is 31333100009. The reversal of 31333100000 is 133313.

It is a super-2 number, since 2×31333100000² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31333100009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56666 + ... + 256665.

It is an arithmetic number, because the mean of its divisors is an integer number (1070890443).

Almost surely, 2^31333100000 is an apocalyptic number.

It is an amenable number.

31333100000 is an abundant number, since it is smaller than the sum of its proper divisors (45771011896).

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

31333100000 is an frugal number, since it uses more digits than its factorization.

31333100000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313366 (or 313338 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 14.

Adding to 31333100000 its reverse (133313), we get a palindrome (31333233313).

The spelling of 31333100000 in words is "thirty-one billion, three hundred thirty-three million, one hundred thousand".