31110220223312 has 10 divisors (see below), whose sum is σ = 60276051682698. Its totient is φ = 15555110111648.

The previous prime is 31110220223311. The next prime is 31110220223443. The reversal of 31110220223312 is 21332202201113.

It can be written as a sum of positive squares in only one way, i.e., 30950351396416 + 159868826896 = 5563304^2 + 399836^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31110220223311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 972194381963 + ... + 972194381994.

Almost surely, 2^{31110220223312} is an apocalyptic number.

It is an amenable number.

31110220223312 is a deficient number, since it is larger than the sum of its proper divisors (29165831459386).

31110220223312 is a wasteful number, since it uses less digits than its factorization.

31110220223312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1944388763965 (or 1944388763959 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 31110220223312 its reverse (21332202201113), we get a palindrome (52442422424425).

The spelling of 31110220223312 in words is "thirty-one trillion, one hundred ten billion, two hundred twenty million, two hundred twenty-three thousand, three hundred twelve".