34311220 has 12 divisors (see below), whose sum is σ = 72053604. Its totient is φ = 13724480.

The previous prime is 34311163. The next prime is 34311223. The reversal of 34311220 is 2211343.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4761124 + 29550096 = 2182^2 + 5436^2 .

It is a junction number, because it is equal to n+sod(n) for n = 34311194 and 34311203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34311223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 857761 + ... + 857800.

It is an arithmetic number, because the mean of its divisors is an integer number (6004467).

Almost surely, 2^34311220 is an apocalyptic number.

It is an amenable number.

34311220 is an abundant number, since it is smaller than the sum of its proper divisors (37742384).

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

34311220 is a wasteful number, since it uses less digits than its factorization.

34311220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1715570 (or 1715568 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 34311220 is about 5857.5779977735. The cubic root of 34311220 is about 324.9466421279.

Adding to 34311220 its reverse (2211343), we get a palindrome (36522563).

The spelling of 34311220 in words is "thirty-four million, three hundred eleven thousand, two hundred twenty".