31122230203312 has 20 divisors (see below), whose sum is σ = 60521827746976. Its totient is φ = 15503694010560.

The previous prime is 31122230203307. The next prime is 31122230203321. The reversal of 31122230203312 is 21330203222113.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3588813723 + ... + 3588822394.

Almost surely, 2^{31122230203312} is an apocalyptic number.

It is an amenable number.

31122230203312 is a deficient number, since it is larger than the sum of its proper divisors (29399597543664).

31122230203312 is a wasteful number, since it uses less digits than its factorization.

31122230203312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7177636396 (or 7177636390 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 31122230203312 its reverse (21330203222113), we get a palindrome (52452433425425).

The spelling of 31122230203312 in words is "thirty-one trillion, one hundred twenty-two billion, two hundred thirty million, two hundred three thousand, three hundred twelve".