31116542 has 16 divisors (see below), whose sum is σ = 48035472. Its totient is φ = 15111360.

The previous prime is 31116523. The next prime is 31116559. The reversal of 31116542 is 24561113.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8192 + ... + 11372.

It is an arithmetic number, because the mean of its divisors is an integer number (3002217).

Almost surely, 2^31116542 is an apocalyptic number.

31116542 is a deficient number, since it is larger than the sum of its proper divisors (16918930).

31116542 is a wasteful number, since it uses less digits than its factorization.

31116542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3323.

The product of its digits is 720, while the sum is 23.

The square root of 31116542 is about 5578.2203255160. The cubic root of 31116542 is about 314.5312318648.

Adding to 31116542 its reverse (24561113), we get a palindrome (55677655).

The spelling of 31116542 in words is "thirty-one million, one hundred sixteen thousand, five hundred forty-two".