31111130231112 has 16 divisors (see below), whose sum is σ = 77777825577840. Its totient is φ = 10370376743696.

The previous prime is 31111130231101. The next prime is 31111130231131. The reversal of 31111130231112 is 21113203111113.

It is a super-2 number, since 2×31111130231112² (a number of 28 digits) contains 22 as substring.

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, 648148546458 + ... + 648148546505.

It is an arithmetic number, because the mean of its divisors is an integer number (4861114098615).

Almost surely, 2^{31111130231112} is an apocalyptic number.

It is an amenable number.

31111130231112 is an abundant number, since it is smaller than the sum of its proper divisors (46666695346728).

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

31111130231112 is a wasteful number, since it uses less digits than its factorization.

31111130231112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296297092972 (or 1296297092968 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 21.

Adding to 31111130231112 its reverse (21113203111113), we get a palindrome (52224333342225).

The spelling of 31111130231112 in words is "thirty-one trillion, one hundred eleven billion, one hundred thirty million, two hundred thirty-one thousand, one hundred twelve".