31424343 has 4 divisors (see below), whose sum is σ = 41899128. Its totient is φ = 20949560.

The previous prime is 31424329. The next prime is 31424353. The reversal of 31424343 is 34342413.

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 31424343 - 2⁸ = 31424087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31424303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5237388 + ... + 5237393.

It is an arithmetic number, because the mean of its divisors is an integer number (10474782).

Almost surely, 2^31424343 is an apocalyptic number.

31424343 is a deficient number, since it is larger than the sum of its proper divisors (10474785).

31424343 is a wasteful number, since it uses less digits than its factorization.

31424343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10474784.

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

The square root of 31424343 is about 5605.7419669478. The cubic root of 31424343 is about 315.5649323066.

Adding to 31424343 its reverse (34342413), we get a palindrome (65766756).

The spelling of 31424343 in words is "thirty-one million, four hundred twenty-four thousand, three hundred forty-three".