31443124 has 6 divisors (see below), whose sum is σ = 55025474. Its totient is φ = 15721560.

The previous prime is 31443091. The next prime is 31443133. The reversal of 31443124 is 42134413.

It can be written as a sum of positive squares in only one way, i.e., 17139600 + 14303524 = 4140^2 + 3782^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31443095 and 31443104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3930387 + ... + 3930394.

Almost surely, 2^31443124 is an apocalyptic number.

It is an amenable number.

31443124 is a deficient number, since it is larger than the sum of its proper divisors (23582350).

31443124 is a wasteful number, since it uses less digits than its factorization.

31443124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7860785 (or 7860783 counting only the distinct ones).

The product of its digits is 1152, while the sum is 22.

The square root of 31443124 is about 5607.4168741052. The cubic root of 31443124 is about 315.6277863885.

Adding to 31443124 its reverse (42134413), we get a palindrome (73577537).

The spelling of 31443124 in words is "thirty-one million, four hundred forty-three thousand, one hundred twenty-four".