311442421020 has 96 divisors (see below), whose sum is σ = 873725664000. Its totient is φ = 82890846720.

The previous prime is 311442421019. The next prime is 311442421057. The reversal of 311442421020 is 20124244113.

It is a super-2 number, since 2×311442421020² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89007231 + ... + 89010729.

It is an arithmetic number, because the mean of its divisors is an integer number (9101309000).

Almost surely, 2^311442421020 is an apocalyptic number.

311442421020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

311442421020 is an abundant number, since it is smaller than the sum of its proper divisors (562283242980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311442421020 is a wasteful number, since it uses less digits than its factorization.

311442421020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5955 (or 5953 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 311442421020 its reverse (20124244113), we get a palindrome (331566665133).

The spelling of 311442421020 in words is "three hundred eleven billion, four hundred forty-two million, four hundred twenty-one thousand, twenty".