31427324 has 24 divisors (see below), whose sum is σ = 56936880. Its totient is φ = 15168384.

The previous prime is 31427267. The next prime is 31427327. The reversal of 31427324 is 42372413.

31427324 is nontrivially palindromic in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 31427293 and 31427302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31427327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14282 + ... + 16334.

It is an arithmetic number, because the mean of its divisors is an integer number (2372370).

Almost surely, 2^31427324 is an apocalyptic number.

It is an amenable number.

31427324 is a deficient number, since it is larger than the sum of its proper divisors (25509556).

31427324 is a wasteful number, since it uses less digits than its factorization.

31427324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2189 (or 2187 counting only the distinct ones).

The product of its digits is 4032, while the sum is 26.

The square root of 31427324 is about 5606.0078487280. The cubic root of 31427324 is about 315.5749104449.

Adding to 31427324 its reverse (42372413), we get a palindrome (73799737).

The spelling of 31427324 in words is "thirty-one million, four hundred twenty-seven thousand, three hundred twenty-four".