31321222133000 has 32 divisors (see below), whose sum is σ = 73291659793560. Its totient is φ = 12528488852800.

The previous prime is 31321222132951. The next prime is 31321222133023. The reversal of 31321222133000 is 33122212313.

It can be written as a sum of positive squares in 4 ways, for example, as 2964340419076 + 28356881713924 = 1721726^2 + 5325118^2 .

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, 15660610067 + ... + 15660612066.

Almost surely, 2^{31321222133000} is an apocalyptic number.

It is an amenable number.

31321222133000 is an abundant number, since it is smaller than the sum of its proper divisors (41970437660560).

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

31321222133000 is a wasteful number, since it uses less digits than its factorization.

31321222133000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31321222154 (or 31321222140 counting only the distinct ones).

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

Adding to 31321222133000 its reverse (33122212313), we get a palindrome (31354344345313).

The spelling of 31321222133000 in words is "thirty-one trillion, three hundred twenty-one billion, two hundred twenty-two million, one hundred thirty-three thousand".