131398000 has 40 divisors (see below), whose sum is σ = 317725200. Its totient is φ = 52558400.

The previous prime is 131397991. The next prime is 131398013. The reversal of 131398000 is 893131.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30850 + ... + 34849.

It is an arithmetic number, because the mean of its divisors is an integer number (7943130).

Almost surely, 2^131398000 is an apocalyptic number.

131398000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131398000 is an abundant number, since it is smaller than the sum of its proper divisors (186327200).

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

131398000 is an equidigital number, since it uses as much as digits as its factorization.

131398000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65722 (or 65706 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 131398000 is about 11462.8966670733. The cubic root of 131398000 is about 508.3891246358.

The spelling of 131398000 in words is "one hundred thirty-one million, three hundred ninety-eight thousand".