131155000 has 80 divisors (see below), whose sum is σ = 325583280. Its totient is φ = 49344000.

The previous prime is 131154943. The next prime is 131155009. The reversal of 131155000 is 551131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131155009) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 84229 + ... + 85771.

It is an arithmetic number, because the mean of its divisors is an integer number (4069791).

Almost surely, 2^131155000 is an apocalyptic number.

131155000 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 131155000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162791640).

131155000 is an abundant number, since it is smaller than the sum of its proper divisors (194428280).

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

131155000 is a wasteful number, since it uses less digits than its factorization.

131155000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586 (or 1567 counting only the distinct ones).

The product of its (nonzero) digits is 75, while the sum is 16.

The square root of 131155000 is about 11452.2923469496. The cubic root of 131155000 is about 508.0755359189.

The spelling of 131155000 in words is "one hundred thirty-one million, one hundred fifty-five thousand".