34142731 has 16 divisors (see below), whose sum is σ = 40547584. Its totient is φ = 28141344.

The previous prime is 34142699. The next prime is 34142767. The reversal of 34142731 is 13724143.

It is not a de Polignac number, because 34142731 - 2⁵ = 34142699 is a prime.

It is a super-2 number, since 2×34142731² = 2331452160276722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 34142696 and 34142705.

It is not an unprimeable number, because it can be changed into a prime (34142531) 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, 19321 + ... + 21013.

It is an arithmetic number, because the mean of its divisors is an integer number (2534224).

Almost surely, 2^34142731 is an apocalyptic number.

34142731 is a deficient number, since it is larger than the sum of its proper divisors (6404853).

34142731 is a wasteful number, since it uses less digits than its factorization.

34142731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1810.

The product of its digits is 2016, while the sum is 25.

The square root of 34142731 is about 5843.1781591870. The cubic root of 34142731 is about 324.4138737546.

Adding to 34142731 its reverse (13724143), we get a palindrome (47866874).

The spelling of 34142731 in words is "thirty-four million, one hundred forty-two thousand, seven hundred thirty-one".