90310012 has 48 divisors (see below), whose sum is σ = 175863744. Its totient is φ = 40320000.

The previous prime is 90310009. The next prime is 90310013. The reversal of 90310012 is 21001309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90310013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225012 + ... + 225412.

It is an arithmetic number, because the mean of its divisors is an integer number (3663828).

Almost surely, 2^90310012 is an apocalyptic number.

It is an amenable number.

90310012 is a deficient number, since it is larger than the sum of its proper divisors (85553732).

90310012 is a wasteful number, since it uses less digits than its factorization.

90310012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550 (or 548 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 90310012 is about 9503.1580014225. The cubic root of 90310012 is about 448.6544365529.

The spelling of 90310012 in words is "ninety million, three hundred ten thousand, twelve".