311243130422 has 16 divisors (see below), whose sum is σ = 539988083712. Its totient is φ = 131782805160.

The previous prime is 311243130409. The next prime is 311243130427. The reversal of 311243130422 is 224031342113.

It is a super-2 number, since 2×311243130422² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 311243130391 and 311243130400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311243130427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133924454 + ... + 133926777.

It is an arithmetic number, because the mean of its divisors is an integer number (33749255232).

Almost surely, 2^311243130422 is an apocalyptic number.

311243130422 is a deficient number, since it is larger than the sum of its proper divisors (228744953290).

311243130422 is a wasteful number, since it uses less digits than its factorization.

311243130422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267851323.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 311243130422 its reverse (224031342113), we get a palindrome (535274472535).

The spelling of 311243130422 in words is "three hundred eleven billion, two hundred forty-three million, one hundred thirty thousand, four hundred twenty-two".