34381312531 has 4 divisors (see below), whose sum is σ = 35310537232. Its totient is φ = 33452087832.

The previous prime is 34381312519. The next prime is 34381312561. The reversal of 34381312531 is 13521318343.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 34381312531 - 2¹⁹ = 34380788243 is a prime.

It is a super-2 number, since 2×34381312531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34381312561) 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 3 ways as a sum of consecutive naturals, for example, 464612295 + ... + 464612368.

It is an arithmetic number, because the mean of its divisors is an integer number (8827634308).

Almost surely, 2^34381312531 is an apocalyptic number.

34381312531 is a deficient number, since it is larger than the sum of its proper divisors (929224701).

34381312531 is an equidigital number, since it uses as much as digits as its factorization.

34381312531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929224700.

The product of its digits is 25920, while the sum is 34.

The spelling of 34381312531 in words is "thirty-four billion, three hundred eighty-one million, three hundred twelve thousand, five hundred thirty-one".