31420324 has 12 divisors (see below), whose sum is σ = 59215324. Its totient is φ = 14501664.

The previous prime is 31420313. The next prime is 31420327. The reversal of 31420324 is 42302413.

It can be written as a sum of positive squares in 2 ways, for example, as 14197824 + 17222500 = 3768^2 + 4150^2 .

It is not an unprimeable number, because it can be changed into a prime (31420327) 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 3 ways as a sum of consecutive naturals, for example, 302067 + ... + 302170.

Almost surely, 2^31420324 is an apocalyptic number.

It is an amenable number.

31420324 is a deficient number, since it is larger than the sum of its proper divisors (27795000).

31420324 is a wasteful number, since it uses less digits than its factorization.

31420324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604254 (or 604252 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 31420324 is about 5605.3834837592. The cubic root of 31420324 is about 315.5514787287.

Adding to 31420324 its reverse (42302413), we get a palindrome (73722737).

The spelling of 31420324 in words is "thirty-one million, four hundred twenty thousand, three hundred twenty-four".