311430314222242 has 4 divisors (see below), whose sum is σ = 467145471333366. Its totient is φ = 155715157111120.

The previous prime is 311430314222231. The next prime is 311430314222411. The reversal of 311430314222242 is 242222413034113.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 206736919965801 + 104693394256441 = 14378349^2 + 10231979^2 .

It is a junction number, because it is equal to n+sod(n) for n = 311430314222198 and 311430314222207.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77857578555559 + ... + 77857578555562.

Almost surely, 2^{311430314222242} is an apocalyptic number.

311430314222242 is a deficient number, since it is larger than the sum of its proper divisors (155715157111124).

311430314222242 is a wasteful number, since it uses less digits than its factorization.

311430314222242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155715157111123.

The product of its (nonzero) digits is 55296, while the sum is 34.

Adding to 311430314222242 its reverse (242222413034113), we get a palindrome (553652727256355).

The spelling of 311430314222242 in words is "three hundred eleven trillion, four hundred thirty billion, three hundred fourteen million, two hundred twenty-two thousand, two hundred forty-two".