31010042 has 12 divisors (see below), whose sum is σ = 54109530. Its totient is φ = 13289976.

The previous prime is 31010041. The next prime is 31010047. The reversal of 31010042 is 24001013.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 25897921 + 5112121 = 5089^2 + 2261^2 .

It is not an unprimeable number, because it can be changed into a prime (31010041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 158117 + ... + 158312.

Almost surely, 2^31010042 is an apocalyptic number.

31010042 is a deficient number, since it is larger than the sum of its proper divisors (23099488).

31010042 is a wasteful number, since it uses less digits than its factorization.

31010042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316445 (or 316438 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 31010042 is about 5568.6660880322. Note that the first 3 decimals coincide. The cubic root of 31010042 is about 314.1719817325.

Adding to 31010042 its reverse (24001013), we get a palindrome (55011055).

The spelling of 31010042 in words is "thirty-one million, ten thousand, forty-two".