311819421622 has 4 divisors (see below), whose sum is σ = 467729132436. Its totient is φ = 155909710810.

The previous prime is 311819421619. The next prime is 311819421629. The reversal of 311819421622 is 226124918113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 226124918113 = 89 ⋅2540729417.

It is a super-2 number, since 2×311819421622² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311819421629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77954855404 + ... + 77954855407.

It is an arithmetic number, because the mean of its divisors is an integer number (116932283109).

Almost surely, 2^311819421622 is an apocalyptic number.

311819421622 is a deficient number, since it is larger than the sum of its proper divisors (155909710814).

311819421622 is a wasteful number, since it uses less digits than its factorization.

311819421622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155909710813.

The product of its digits is 41472, while the sum is 40.

The spelling of 311819421622 in words is "three hundred eleven billion, eight hundred nineteen million, four hundred twenty-one thousand, six hundred twenty-two".