311212320122 has 32 divisors (see below), whose sum is σ = 550685433600. Its totient is φ = 130306209280.

The previous prime is 311212320121. The next prime is 311212320179. The reversal of 311212320122 is 221023212113.

It is a junction number, because it is equal to n+sod(n) for n = 311212320094 and 311212320103.

It is not an unprimeable number, because it can be changed into a prime (311212320121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8834747 + ... + 8869902.

It is an arithmetic number, because the mean of its divisors is an integer number (17208919800).

Almost surely, 2^311212320122 is an apocalyptic number.

311212320122 is a deficient number, since it is larger than the sum of its proper divisors (239473113478).

311212320122 is a wasteful number, since it uses less digits than its factorization.

311212320122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17704726.

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

Adding to 311212320122 its reverse (221023212113), we get a palindrome (532235532235).

The spelling of 311212320122 in words is "three hundred eleven billion, two hundred twelve million, three hundred twenty thousand, one hundred twenty-two".