31121322122 has 8 divisors (see below), whose sum is σ = 50925799872. Its totient is φ = 14146055500.

The previous prime is 31121322101. The next prime is 31121322157. The reversal of 31121322122 is 22122312113.

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

It is a junction number, because it is equal to n+sod(n) for n = 31121322094 and 31121322103.

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, 707302754 + ... + 707302797.

It is an arithmetic number, because the mean of its divisors is an integer number (6365724984).

Almost surely, 2^31121322122 is an apocalyptic number.

31121322122 is a deficient number, since it is larger than the sum of its proper divisors (19804477750).

31121322122 is a wasteful number, since it uses less digits than its factorization.

31121322122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1414605564.

The product of its digits is 288, while the sum is 20.

Adding to 31121322122 its reverse (22122312113), we get a palindrome (53243634235).

The spelling of 31121322122 in words is "thirty-one billion, one hundred twenty-one million, three hundred twenty-two thousand, one hundred twenty-two".