31331112122 has 4 divisors (see below), whose sum is σ = 46996668186. Its totient is φ = 15665556060.

The previous prime is 31331112097. The next prime is 31331112139. The reversal of 31331112122 is 22121113313.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 29101289281 + 2229822841 = 170591^2 + 47221^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31331112094 and 31331112103.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7832778029 + ... + 7832778032.

Almost surely, 2^31331112122 is an apocalyptic number.

31331112122 is a deficient number, since it is larger than the sum of its proper divisors (15665556064).

31331112122 is a wasteful number, since it uses less digits than its factorization.

31331112122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15665556063.

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

Adding to 31331112122 its reverse (22121113313), we get a palindrome (53452225435).

The spelling of 31331112122 in words is "thirty-one billion, three hundred thirty-one million, one hundred twelve thousand, one hundred twenty-two".