31263042 has 8 divisors (see below), whose sum is σ = 62526096. Its totient is φ = 10421012.

The previous prime is 31263041. The next prime is 31263047. The reversal of 31263042 is 24036213.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

31263042 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (31263041) 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 in 3 ways as a sum of consecutive naturals, for example, 2605248 + ... + 2605259.

It is an arithmetic number, because the mean of its divisors is an integer number (7815762).

Almost surely, 2^31263042 is an apocalyptic number.

31263042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

31263042 is a wasteful number, since it uses less digits than its factorization.

31263042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5210512.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 31263042 is about 5591.3363340082. The cubic root of 31263042 is about 315.0240747536.

Adding to 31263042 its reverse (24036213), we get a palindrome (55299255).

The spelling of 31263042 in words is "thirty-one million, two hundred sixty-three thousand, forty-two".