34201981 has 6 divisors (see below), whose sum is σ = 37594046. Its totient is φ = 31092600.

The previous prime is 34201969. The next prime is 34201987. The reversal of 34201981 is 18910243.

It is a happy number.

34201981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 29648025 + 4553956 = 5445^2 + 2134^2 .

It is not a de Polignac number, because 34201981 - 2²¹ = 32104829 is a prime.

It is a super-2 number, since 2×34201981² = 2339551008648722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34201987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 141210 + ... + 141451.

Almost surely, 2^34201981 is an apocalyptic number.

It is an amenable number.

34201981 is a deficient number, since it is larger than the sum of its proper divisors (3392065).

34201981 is a wasteful number, since it uses less digits than its factorization.

34201981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282683 (or 282672 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 34201981 is about 5848.2459763591. The cubic root of 34201981 is about 324.6014238167.

The spelling of 34201981 in words is "thirty-four million, two hundred one thousand, nine hundred eighty-one".