31000112222222 has 32 divisors (see below), whose sum is σ = 54642897993600. Its totient is φ = 13003866378720.

The previous prime is 31000112222203. The next prime is 31000112222249. The reversal of 31000112222222 is 22222221100013.

It is a super-2 number, since 2×31000112222222² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31000112222194 and 31000112222203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12049448 + ... + 14394075.

It is an arithmetic number, because the mean of its divisors is an integer number (1707590562300).

Almost surely, 2^{31000112222222} is an apocalyptic number.

31000112222222 is a deficient number, since it is larger than the sum of its proper divisors (23642785771378).

31000112222222 is a wasteful number, since it uses less digits than its factorization.

31000112222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26447648.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 31000112222222 its reverse (22222221100013), we get a palindrome (53222333322235).

The spelling of 31000112222222 in words is "thirty-one trillion, one hundred twelve million, two hundred twenty-two thousand, two hundred twenty-two".