112831290 has 144 divisors (see below), whose sum is σ = 347694984. Its totient is φ = 25217280.

The previous prime is 112831267. The next prime is 112831297. The reversal of 112831290 is 92138211.

It can be written as a sum of positive squares in 4 ways, for example, as 69705801 + 43125489 = 8349^2 + 6567^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112831297) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 141172 + ... + 141968.

Almost surely, 2^112831290 is an apocalyptic number.

112831290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 112831290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173847492).

112831290 is an abundant number, since it is smaller than the sum of its proper divisors (234863694).

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

112831290 is a wasteful number, since it uses less digits than its factorization.

112831290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845 (or 831 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 112831290 is about 10622.2073977116. The cubic root of 112831290 is about 483.2180901091.

The spelling of 112831290 in words is "one hundred twelve million, eight hundred thirty-one thousand, two hundred ninety".