31223001112 has 32 divisors (see below), whose sum is σ = 62468535600. Its totient is φ = 14587236864.

The previous prime is 31223001079. The next prime is 31223001127. The reversal of 31223001112 is 21110032213.

It is a congruent number.

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, 1395853 + ... + 1418044.

Almost surely, 2^31223001112 is an apocalyptic number.

It is an amenable number.

31223001112 is an abundant number, since it is smaller than the sum of its proper divisors (31245534488).

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

31223001112 is a wasteful number, since it uses less digits than its factorization.

31223001112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2813995 (or 2813991 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 31223001112 its reverse (21110032213), we get a palindrome (52333033325).

The spelling of 31223001112 in words is "thirty-one billion, two hundred twenty-three million, one thousand, one hundred twelve".