31843042 has 48 divisors (see below), whose sum is σ = 61395840. Its totient is φ = 12247200.

The previous prime is 31843039. The next prime is 31843079. The reversal of 31843042 is 24034813.

It is a junction number, because it is equal to n+sod(n) for n = 31842998 and 31843016.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 117367 + ... + 117637.

It is an arithmetic number, because the mean of its divisors is an integer number (1279080).

Almost surely, 2^31843042 is an apocalyptic number.

31843042 is a deficient number, since it is larger than the sum of its proper divisors (29552798).

31843042 is a wasteful number, since it uses less digits than its factorization.

31843042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407 (or 400 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 31843042 is about 5642.9639375066. The cubic root of 31843042 is about 316.9602858692.

Adding to 31843042 its reverse (24034813), we get a palindrome (55877855).

It can be divided in two parts, 3184 and 3042, that added together give a palindrome (6226).

The spelling of 31843042 in words is "thirty-one million, eight hundred forty-three thousand, forty-two".