39342431 has 4 divisors (see below), whose sum is σ = 40179552. Its totient is φ = 38505312.

The previous prime is 39342409. The next prime is 39342461. The reversal of 39342431 is 13424393.

39342431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13424393 = 19 ⋅706547.

It is a cyclic number.

It is not a de Polignac number, because 39342431 - 2¹⁸ = 39080287 is a prime.

It is a super-2 number, since 2×39342431² = 3095653753979522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39342394 and 39342403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39342461) 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 3 ways as a sum of consecutive naturals, for example, 418490 + ... + 418583.

It is an arithmetic number, because the mean of its divisors is an integer number (10044888).

Almost surely, 2^39342431 is an apocalyptic number.

39342431 is a deficient number, since it is larger than the sum of its proper divisors (837121).

39342431 is an equidigital number, since it uses as much as digits as its factorization.

39342431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837120.

The product of its digits is 7776, while the sum is 29.

The square root of 39342431 is about 6272.3545020989. The cubic root of 39342431 is about 340.1107799337.

It can be divided in two parts, 393 and 42431, that added together give a palindrome (42824).

The spelling of 39342431 in words is "thirty-nine million, three hundred forty-two thousand, four hundred thirty-one".