31061424 has 20 divisors (see below), whose sum is σ = 80242136. Its totient is φ = 10353792.

The previous prime is 31061423. The next prime is 31061441. The reversal of 31061424 is 42416013.

It is a self number, because there is not a number n which added to its sum of digits gives 31061424.

It is not an unprimeable number, because it can be changed into a prime (31061423) 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, 323509 + ... + 323604.

Almost surely, 2^31061424 is an apocalyptic number.

It is an amenable number.

31061424 is an abundant number, since it is smaller than the sum of its proper divisors (49180712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31061424 is a wasteful number, since it uses less digits than its factorization.

31061424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647124 (or 647118 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 31061424 is about 5573.2776711734. The cubic root of 31061424 is about 314.3454081025.

Adding to 31061424 its reverse (42416013), we get a palindrome (73477437).

The spelling of 31061424 in words is "thirty-one million, sixty-one thousand, four hundred twenty-four".