34138531 has 16 divisors (see below), whose sum is σ = 40547520. Its totient is φ = 28131840.

The previous prime is 34138529. The next prime is 34138537. The reversal of 34138531 is 13583143.

It is not a de Polignac number, because 34138531 - 2¹ = 34138529 is a prime.

It is a super-2 number, since 2×34138531² = 2330878597675922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 34138531.

It is not an unprimeable number, because it can be changed into a prime (34138537) 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 15 ways as a sum of consecutive naturals, for example, 22311 + ... + 23791.

It is an arithmetic number, because the mean of its divisors is an integer number (2534220).

Almost surely, 2^34138531 is an apocalyptic number.

34138531 is a deficient number, since it is larger than the sum of its proper divisors (6408989).

34138531 is a wasteful number, since it uses less digits than its factorization.

34138531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1614.

The product of its digits is 4320, while the sum is 28.

The square root of 34138531 is about 5842.8187546765. The cubic root of 34138531 is about 324.4005708337.

The spelling of 34138531 in words is "thirty-four million, one hundred thirty-eight thousand, five hundred thirty-one".