34111721 has 4 divisors (see below), whose sum is σ = 38984832. Its totient is φ = 29238612.

The previous prime is 34111711. The next prime is 34111723. The reversal of 34111721 is 12711143.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 34111721 - 2⁶ = 34111657 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 34111693 and 34111702.

It is not an unprimeable number, because it can be changed into a prime (34111723) 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, 2436545 + ... + 2436558.

It is an arithmetic number, because the mean of its divisors is an integer number (9746208).

Almost surely, 2^34111721 is an apocalyptic number.

It is an amenable number.

34111721 is a deficient number, since it is larger than the sum of its proper divisors (4873111).

34111721 is an equidigital number, since it uses as much as digits as its factorization.

34111721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4873110.

The product of its digits is 168, while the sum is 20.

The square root of 34111721 is about 5840.5240347078. The cubic root of 34111721 is about 324.3156281335.

Adding to 34111721 its reverse (12711143), we get a palindrome (46822864).

The spelling of 34111721 in words is "thirty-four million, one hundred eleven thousand, seven hundred twenty-one".