31201332112 has 20 divisors (see below), whose sum is σ = 61180927920. Its totient is φ = 15412705568.

The previous prime is 31201332103. The next prime is 31201332121. The reversal of 31201332112 is 21123310213.

It is an interprime number because it is at equal distance from previous prime (31201332103) and next prime (31201332121).

It is a self number, because there is not a number n which added to its sum of digits gives 31201332112.

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, 11746162 + ... + 11748817.

It is an arithmetic number, because the mean of its divisors is an integer number (3059046396).

Almost surely, 2^31201332112 is an apocalyptic number.

It is an amenable number.

31201332112 is a deficient number, since it is larger than the sum of its proper divisors (29979595808).

31201332112 is a wasteful number, since it uses less digits than its factorization.

31201332112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23495070 (or 23495064 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31201332112 its reverse (21123310213), we get a palindrome (52324642325).

The spelling of 31201332112 in words is "thirty-one billion, two hundred one million, three hundred thirty-two thousand, one hundred twelve".