311240520422 has 32 divisors (see below), whose sum is σ = 511426288800. Its totient is φ = 141178399488.

The previous prime is 311240520407. The next prime is 311240520491. The reversal of 311240520422 is 224025042113.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 311240520391 and 311240520400.

It is a congruent number.

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, 6463298 + ... + 6511274.

It is an arithmetic number, because the mean of its divisors is an integer number (15982071525).

Almost surely, 2^311240520422 is an apocalyptic number.

311240520422 is a deficient number, since it is larger than the sum of its proper divisors (200185768378).

311240520422 is a wasteful number, since it uses less digits than its factorization.

311240520422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52280.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 311240520422 its reverse (224025042113), we get a palindrome (535265562535).

The spelling of 311240520422 in words is "three hundred eleven billion, two hundred forty million, five hundred twenty thousand, four hundred twenty-two".