311020052 has 24 divisors (see below), whose sum is σ = 634737600. Its totient is φ = 133293720.

The previous prime is 311020037. The next prime is 311020057. The reversal of 311020052 is 250020113.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311020057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111974 + ... + 114717.

It is an arithmetic number, because the mean of its divisors is an integer number (26447400).

Almost surely, 2^311020052 is an apocalyptic number.

It is an amenable number.

311020052 is an abundant number, since it is smaller than the sum of its proper divisors (323717548).

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

311020052 is a wasteful number, since it uses less digits than its factorization.

311020052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226716 (or 226700 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 311020052 is about 17635.7606016866. The cubic root of 311020052 is about 677.5314560814.

Adding to 311020052 its reverse (250020113), we get a palindrome (561040165).

The spelling of 311020052 in words is "three hundred eleven million, twenty thousand, fifty-two".