31142032 has 10 divisors (see below), whose sum is σ = 60337718. Its totient is φ = 15571008.

The previous prime is 31142021. The next prime is 31142039. The reversal of 31142032 is 23024113.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 15649936 + 15492096 = 3956^2 + 3936^2 .

It is a Harshad number since it is a multiple of its sum of digits (16), and also a Moran number because the ratio is a prime number: 1946377 = 31142032 / (3 + 1 + 1 + 4 + 2 + 0 + 3 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 31141997 and 31142015.

It is not an unprimeable number, because it can be changed into a prime (31142039) 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, 973173 + ... + 973204.

Almost surely, 2^31142032 is an apocalyptic number.

It is an amenable number.

31142032 is a deficient number, since it is larger than the sum of its proper divisors (29195686).

31142032 is a wasteful number, since it uses less digits than its factorization.

31142032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1946385 (or 1946379 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 31142032 is about 5580.5046366794. The cubic root of 31142032 is about 314.6170941570.

Adding to 31142032 its reverse (23024113), we get a palindrome (54166145).

The spelling of 31142032 in words is "thirty-one million, one hundred forty-two thousand, thirty-two".