131320832 has 44 divisors (see below), whose sum is σ = 264063000. Its totient is φ = 65273856.

The previous prime is 131320817. The next prime is 131320841. The reversal of 131320832 is 238023131.

It is a junction number, because it is equal to n+sod(n) for n = 131320798 and 131320807.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262919 + ... + 263417.

Almost surely, 2^131320832 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131320832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132031500).

131320832 is an abundant number, since it is smaller than the sum of its proper divisors (132742168).

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

131320832 is an equidigital number, since it uses as much as digits as its factorization.

131320832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776 (or 758 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 131320832 is about 11459.5301823417. The cubic root of 131320832 is about 508.2895821404.

Adding to 131320832 its reverse (238023131), we get a palindrome (369343963).

The spelling of 131320832 in words is "one hundred thirty-one million, three hundred twenty thousand, eight hundred thirty-two".