311401403212 has 48 divisors (see below), whose sum is σ = 570011000832. Its totient is φ = 148574099520.

The previous prime is 311401403177. The next prime is 311401403227. The reversal of 311401403212 is 212304104113.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91830037 + ... + 91833427.

It is an arithmetic number, because the mean of its divisors is an integer number (11875229184).

Almost surely, 2^311401403212 is an apocalyptic number.

It is an amenable number.

311401403212 is a deficient number, since it is larger than the sum of its proper divisors (258609597620).

311401403212 is a wasteful number, since it uses less digits than its factorization.

311401403212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5518 (or 5516 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 311401403212 its reverse (212304104113), we get a palindrome (523705507325).

The spelling of 311401403212 in words is "three hundred eleven billion, four hundred one million, four hundred three thousand, two hundred twelve".