31130303122 has 4 divisors (see below), whose sum is σ = 46695454686. Its totient is φ = 15565151560.

The previous prime is 31130303107. The next prime is 31130303147. The reversal of 31130303122 is 22130303113.

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., 15825891601 + 15304411521 = 125801^2 + 123711^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31130303122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7782575779 + ... + 7782575782.

Almost surely, 2^31130303122 is an apocalyptic number.

31130303122 is a deficient number, since it is larger than the sum of its proper divisors (15565151564).

31130303122 is a wasteful number, since it uses less digits than its factorization.

31130303122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15565151563.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 31130303122 its reverse (22130303113), we get a palindrome (53260606235).

Subtracting from 31130303122 its reverse (22130303113), we obtain a palindrome (9000000009).

The spelling of 31130303122 in words is "thirty-one billion, one hundred thirty million, three hundred three thousand, one hundred twenty-two".