31233223012 has 6 divisors (see below), whose sum is σ = 54658140278. Its totient is φ = 15616611504.

The previous prime is 31233222997. The next prime is 31233223027. The reversal of 31233223012 is 21032233213.

It is an interprime number because it is at equal distance from previous prime (31233222997) and next prime (31233223027).

It can be written as a sum of positive squares in only one way, i.e., 16039209316 + 15194013696 = 126646^2 + 123264^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3904152873 + ... + 3904152880.

Almost surely, 2^31233223012 is an apocalyptic number.

It is an amenable number.

31233223012 is a deficient number, since it is larger than the sum of its proper divisors (23424917266).

31233223012 is a wasteful number, since it uses less digits than its factorization.

31233223012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7808305757 (or 7808305755 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 31233223012 its reverse (21032233213), we get a palindrome (52265456225).

The spelling of 31233223012 in words is "thirty-one billion, two hundred thirty-three million, two hundred twenty-three thousand, twelve".