131309000 has 64 divisors (see below), whose sum is σ = 323481600. Its totient is φ = 49752000.

The previous prime is 131308999. The next prime is 131309011. The reversal of 131309000 is 903131.

It is a self number, because there is not a number n which added to its sum of digits gives 131309000.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15545 + ... + 22455.

It is an arithmetic number, because the mean of its divisors is an integer number (5054400).

Almost surely, 2^131309000 is an apocalyptic number.

131309000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131309000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161740800).

131309000 is an abundant number, since it is smaller than the sum of its proper divisors (192172600).

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

131309000 is a wasteful number, since it uses less digits than its factorization.

131309000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6951 (or 6937 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 17.

The square root of 131309000 is about 11459.0139191817. The cubic root of 131309000 is about 508.2743160604.

The spelling of 131309000 in words is "one hundred thirty-one million, three hundred nine thousand".