31116152 has 8 divisors (see below), whose sum is σ = 58342800. Its totient is φ = 15558072.

The previous prime is 31116139. The next prime is 31116191. The reversal of 31116152 is 25161113.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1944752 + ... + 1944767.

It is an arithmetic number, because the mean of its divisors is an integer number (7292850).

Almost surely, 2^31116152 is an apocalyptic number.

It is an amenable number.

31116152 is a deficient number, since it is larger than the sum of its proper divisors (27226648).

31116152 is a wasteful number, since it uses less digits than its factorization.

31116152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3889525 (or 3889521 counting only the distinct ones).

The product of its digits is 180, while the sum is 20.

The square root of 31116152 is about 5578.1853680207. The cubic root of 31116152 is about 314.5299177974.

Adding to 31116152 its reverse (25161113), we get a palindrome (56277265).

The spelling of 31116152 in words is "thirty-one million, one hundred sixteen thousand, one hundred fifty-two".