31142024 has 8 divisors (see below), whose sum is σ = 58391310. Its totient is φ = 15571008.

The previous prime is 31142021. The next prime is 31142039. The reversal of 31142024 is 42024113.

It can be written as a sum of positive squares in only one way, i.e., 16564900 + 14577124 = 4070^2 + 3818^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 31141993 and 31142011.

It is not an unprimeable number, because it can be changed into a prime (31142021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1946369 + ... + 1946384.

Almost surely, 2^31142024 is an apocalyptic number.

It is an amenable number.

31142024 is a deficient number, since it is larger than the sum of its proper divisors (27249286).

31142024 is a wasteful number, since it uses less digits than its factorization.

31142024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3892759 (or 3892755 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 31142024 is about 5580.5039198983. The cubic root of 31142024 is about 314.6170672166.

Adding to 31142024 its reverse (42024113), we get a palindrome (73166137).

The spelling of 31142024 in words is "thirty-one million, one hundred forty-two thousand, twenty-four".