31242458 has 8 divisors (see below), whose sum is σ = 50468628. Its totient is φ = 14419584.

The previous prime is 31242457. The next prime is 31242461. The reversal of 31242458 is 85424213.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 31214569 + 27889 = 5587^2 + 167^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 31242458.

It is not an unprimeable number, because it can be changed into a prime (31242457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 600791 + ... + 600842.

Almost surely, 2^31242458 is an apocalyptic number.

31242458 is a deficient number, since it is larger than the sum of its proper divisors (19226170).

31242458 is a wasteful number, since it uses less digits than its factorization.

31242458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201648.

The product of its digits is 7680, while the sum is 29.

The square root of 31242458 is about 5589.4953260558. The cubic root of 31242458 is about 314.9549209028.

The spelling of 31242458 in words is "thirty-one million, two hundred forty-two thousand, four hundred fifty-eight".