90831110250 has 128 divisors (see below), whose sum is σ = 246877113600. Its totient is φ = 22155436800.

The previous prime is 90831110147. The next prime is 90831110257. The reversal of 90831110250 is 5201113809.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (90831110257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 303352 + ... + 523148.

It is an arithmetic number, because the mean of its divisors is an integer number (1928727450).

Almost surely, 2^90831110250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90831110250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123438556800).

90831110250 is an abundant number, since it is smaller than the sum of its proper divisors (156046003350).

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

90831110250 is a wasteful number, since it uses less digits than its factorization.

90831110250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219865 (or 219855 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 30.

The spelling of 90831110250 in words is "ninety billion, eight hundred thirty-one million, one hundred ten thousand, two hundred fifty".