31488849 has 24 divisors (see below), whose sum is σ = 52153920. Its totient is φ = 17934048.

The previous prime is 31488827. The next prime is 31488859. The reversal of 31488849 is 94888413.

It is not a de Polignac number, because 31488849 - 2¹² = 31484753 is a prime.

It is a super-2 number, since 2×31488849² = 1983095222689602, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31488859) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 24382 + ... + 25640.

It is an arithmetic number, because the mean of its divisors is an integer number (2173080).

Almost surely, 2^31488849 is an apocalyptic number.

It is an amenable number.

31488849 is a deficient number, since it is larger than the sum of its proper divisors (20665071).

31488849 is a wasteful number, since it uses less digits than its factorization.

31488849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1669 (or 1666 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 31488849 is about 5611.4925821924. The cubic root of 31488849 is about 315.7807089629.

The spelling of 31488849 in words is "thirty-one million, four hundred eighty-eight thousand, eight hundred forty-nine".