31827042 has 24 divisors (see below), whose sum is σ = 74263644. Its totient is φ = 9792864.

The previous prime is 31827041. The next prime is 31827073. The reversal of 31827042 is 24072813.

It can be written as a sum of positive squares in 2 ways, for example, as 28933641 + 2893401 = 5379^2 + 1701^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31826997 and 31827015.

It is not an unprimeable number, because it can be changed into a prime (31827041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67773 + ... + 68240.

Almost surely, 2^31827042 is an apocalyptic number.

31827042 is an abundant number, since it is smaller than the sum of its proper divisors (42436602).

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

31827042 is a wasteful number, since it uses less digits than its factorization.

31827042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136034 (or 136031 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 31827042 is about 5641.5460646883. The cubic root of 31827042 is about 316.9071898720.

Adding to 31827042 its reverse (24072813), we get a palindrome (55899855).

The spelling of 31827042 in words is "thirty-one million, eight hundred twenty-seven thousand, forty-two".