31234642 has 8 divisors (see below), whose sum is σ = 47088000. Its totient is φ = 15538644.

The previous prime is 31234633. The next prime is 31234657. The reversal of 31234642 is 24643213.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38842 + ... + 39637.

It is an arithmetic number, because the mean of its divisors is an integer number (5886000).

Almost surely, 2^31234642 is an apocalyptic number.

31234642 is a deficient number, since it is larger than the sum of its proper divisors (15853358).

31234642 is a wasteful number, since it uses less digits than its factorization.

31234642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78680.

The product of its digits is 3456, while the sum is 25.

The square root of 31234642 is about 5588.7961136545. The cubic root of 31234642 is about 314.9286543718.

Adding to 31234642 its reverse (24643213), we get a palindrome (55877855).

The spelling of 31234642 in words is "thirty-one million, two hundred thirty-four thousand, six hundred forty-two".