34312221 has 8 divisors (see below), whose sum is σ = 50832960. Its totient is φ = 22874796.

The previous prime is 34312189. The next prime is 34312231. The reversal of 34312221 is 12221343.

It is not a de Polignac number, because 34312221 - 2⁵ = 34312189 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 34312194 and 34312203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34312231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 635385 + ... + 635438.

It is an arithmetic number, because the mean of its divisors is an integer number (6354120).

Almost surely, 2^34312221 is an apocalyptic number.

It is an amenable number.

34312221 is a deficient number, since it is larger than the sum of its proper divisors (16520739).

34312221 is a wasteful number, since it uses less digits than its factorization.

34312221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270832 (or 1270826 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 34312221 is about 5857.6634420219. The cubic root of 34312221 is about 324.9498021090.

Adding to 34312221 its reverse (12221343), we get a palindrome (46533564).

The spelling of 34312221 in words is "thirty-four million, three hundred twelve thousand, two hundred twenty-one".