31144024 has 32 divisors (see below), whose sum is σ = 61319520. Its totient is φ = 14800896.

The previous prime is 31143971. The next prime is 31144027. The reversal of 31144024 is 42044113.

It is a junction number, because it is equal to n+sod(n) for n = 31143992 and 31144010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31144027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35074 + ... + 35950.

It is an arithmetic number, because the mean of its divisors is an integer number (1916235).

Almost surely, 2^31144024 is an apocalyptic number.

It is an amenable number.

31144024 is a deficient number, since it is larger than the sum of its proper divisors (30175496).

31144024 is a wasteful number, since it uses less digits than its factorization.

31144024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099 (or 1095 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 31144024 is about 5580.6831123080. The cubic root of 31144024 is about 314.6238021745.

Adding to 31144024 its reverse (42044113), we get a palindrome (73188137).

The spelling of 31144024 in words is "thirty-one million, one hundred forty-four thousand, twenty-four".