31123112202122 has 8 divisors (see below), whose sum is σ = 47165953543716. Its totient is φ = 15401127687552.

The previous prime is 31123112202109. The next prime is 31123112202151. The reversal of 31123112202122 is 22120221132113.

It can be written as a sum of positive squares in 2 ways, for example, as 29685945207361 + 1437166994761 = 5448481^2 + 1198819^2 .

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

It is a super-2 number, since 2×31123112202122² (a number of 28 digits) contains 22 as substring.

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, 80214206513 + ... + 80214206900.

Almost surely, 2^{31123112202122} is an apocalyptic number.

31123112202122 is a deficient number, since it is larger than the sum of its proper divisors (16042841341594).

31123112202122 is a wasteful number, since it uses less digits than its factorization.

31123112202122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160428413512.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 31123112202122 its reverse (22120221132113), we get a palindrome (53243333334235).

The spelling of 31123112202122 in words is "thirty-one trillion, one hundred twenty-three billion, one hundred twelve million, two hundred two thousand, one hundred twenty-two".