90631312 has 20 divisors (see below), whose sum is σ = 176179696. Its totient is φ = 45165600.

The previous prime is 90631283. The next prime is 90631313. The reversal of 90631312 is 21313609.

It is a super-3 number, since 3×90631312³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (90631313) 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 3 ways as a sum of consecutive naturals, for example, 4314 + ... + 14137.

Almost surely, 2^90631312 is an apocalyptic number.

It is an amenable number.

90631312 is a deficient number, since it is larger than the sum of its proper divisors (85548384).

90631312 is a wasteful number, since it uses less digits than its factorization.

90631312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18766 (or 18760 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 90631312 is about 9520.0478990392. The cubic root of 90631312 is about 449.1858728486.

The spelling of 90631312 in words is "ninety million, six hundred thirty-one thousand, three hundred twelve".