31331330122 has 16 divisors (see below), whose sum is σ = 48410448840. Its totient is φ = 15197027328.

The previous prime is 31331330117. The next prime is 31331330137. The reversal of 31331330122 is 22103313313.

It can be written as a sum of positive squares in 4 ways, for example, as 31216175761 + 115154361 = 176681^2 + 10731^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31331330093 and 31331330102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 603247 + ... + 653122.

Almost surely, 2^31331330122 is an apocalyptic number.

31331330122 is a deficient number, since it is larger than the sum of its proper divisors (17079118718).

31331330122 is a wasteful number, since it uses less digits than its factorization.

31331330122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256745.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 31331330122 its reverse (22103313313), we get a palindrome (53434643435).

The spelling of 31331330122 in words is "thirty-one billion, three hundred thirty-one million, three hundred thirty thousand, one hundred twenty-two".