131231798 has 16 divisors (see below), whose sum is σ = 201761280. Its totient is φ = 63998376.

The previous prime is 131231791. The next prime is 131231819. The reversal of 131231798 is 897132131.

It is a happy number.

131231798 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131231791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8111 + ... + 18117.

It is an arithmetic number, because the mean of its divisors is an integer number (12610080).

Almost surely, 2^131231798 is an apocalyptic number.

131231798 is a deficient number, since it is larger than the sum of its proper divisors (70529482).

131231798 is a wasteful number, since it uses less digits than its factorization.

131231798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10171.

The product of its digits is 9072, while the sum is 35.

The square root of 131231798 is about 11455.6448094378. The cubic root of 131231798 is about 508.1746846909.

The spelling of 131231798 in words is "one hundred thirty-one million, two hundred thirty-one thousand, seven hundred ninety-eight".