31313021122 has 8 divisors (see below), whose sum is σ = 47497279500. Its totient is φ = 15480594624.

The previous prime is 31313021119. The next prime is 31313021137. The reversal of 31313021122 is 22112031313.

It can be written as a sum of positive squares in 2 ways, for example, as 30737453041 + 575568081 = 175321^2 + 23991^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 31313021122.

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, 87957747 + ... + 87958102.

Almost surely, 2^31313021122 is an apocalyptic number.

31313021122 is a deficient number, since it is larger than the sum of its proper divisors (16184258378).

31313021122 is a wasteful number, since it uses less digits than its factorization.

31313021122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175915940.

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

Adding to 31313021122 its reverse (22112031313), we get a palindrome (53425052435).

The spelling of 31313021122 in words is "thirty-one billion, three hundred thirteen million, twenty-one thousand, one hundred twenty-two".