42343431 has 32 divisors (see below), whose sum is σ = 62657280. Its totient is φ = 25277184.

The previous prime is 42343421. The next prime is 42343439. The reversal of 42343431 is 13434324.

It is not a de Polignac number, because 42343431 - 2¹³ = 42335239 is a prime.

It is a super-2 number, since 2×42343431² = 3585932297703522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42343439) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 304560 + ... + 304698.

It is an arithmetic number, because the mean of its divisors is an integer number (1958040).

Almost surely, 2^42343431 is an apocalyptic number.

42343431 is a deficient number, since it is larger than the sum of its proper divisors (20313849).

42343431 is a wasteful number, since it uses less digits than its factorization.

42343431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335.

The product of its digits is 3456, while the sum is 24.

The square root of 42343431 is about 6507.1830310819. The cubic root of 42343431 is about 348.5475344907.

Adding to 42343431 its reverse (13434324), we get a palindrome (55777755).

The spelling of 42343431 in words is "forty-two million, three hundred forty-three thousand, four hundred thirty-one".