31490116 has 12 divisors (see below), whose sum is σ = 62980288. Its totient is φ = 13495752.

The previous prime is 31490099. The next prime is 31490119. The reversal of 31490116 is 61109413.

31490116 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (31490119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 562296 + ... + 562351.

Almost surely, 2^31490116 is an apocalyptic number.

It is an amenable number.

31490116 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31490116 is a wasteful number, since it uses less digits than its factorization.

31490116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124658 (or 1124656 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 31490116 is about 5611.6054743718. The cubic root of 31490116 is about 315.7849442060.

Adding to 31490116 its reverse (61109413), we get a palindrome (92599529).

The spelling of 31490116 in words is "thirty-one million, four hundred ninety thousand, one hundred sixteen".