31121303122 has 64 divisors (see below), whose sum is σ = 58104184320. Its totient is φ = 12172944384.

The previous prime is 31121303119. The next prime is 31121303149. The reversal of 31121303122 is 22130312113.

It is a super-2 number, since 2×31121303122² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31121303122.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20038698 + ... + 20040250.

It is an arithmetic number, because the mean of its divisors is an integer number (907877880).

Almost surely, 2^31121303122 is an apocalyptic number.

31121303122 is a deficient number, since it is larger than the sum of its proper divisors (26982881198).

31121303122 is a wasteful number, since it uses less digits than its factorization.

31121303122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2747.

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

Adding to 31121303122 its reverse (22130312113), we get a palindrome (53251615235).

The spelling of 31121303122 in words is "thirty-one billion, one hundred twenty-one million, three hundred three thousand, one hundred twenty-two".