31112312312 has 8 divisors (see below), whose sum is σ = 58335585600. Its totient is φ = 15556156152.

The previous prime is 31112312311. The next prime is 31112312339. The reversal of 31112312312 is 21321321113.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31112312311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1944519512 + ... + 1944519527.

It is an arithmetic number, because the mean of its divisors is an integer number (7291948200).

Almost surely, 2^31112312312 is an apocalyptic number.

It is an amenable number.

31112312312 is a deficient number, since it is larger than the sum of its proper divisors (27223273288).

31112312312 is a wasteful number, since it uses less digits than its factorization.

31112312312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3889039045 (or 3889039041 counting only the distinct ones).

The product of its digits is 216, while the sum is 20.

Adding to 31112312312 its reverse (21321321113), we get a palindrome (52433633425).

The spelling of 31112312312 in words is "thirty-one billion, one hundred twelve million, three hundred twelve thousand, three hundred twelve".