131000398 has 8 divisors (see below), whose sum is σ = 199192608. Its totient is φ = 64602864.

The previous prime is 131000381. The next prime is 131000399. The reversal of 131000398 is 893000131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×131000398² = 34322208552316808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131000399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 448486 + ... + 448777.

It is an arithmetic number, because the mean of its divisors is an integer number (24899076).

Almost surely, 2^131000398 is an apocalyptic number.

131000398 is a deficient number, since it is larger than the sum of its proper divisors (68192210).

131000398 is an equidigital number, since it uses as much as digits as its factorization.

131000398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897338.

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

The square root of 131000398 is about 11445.5405289571. The cubic root of 131000398 is about 507.8758221496.

The spelling of 131000398 in words is "one hundred thirty-one million, three hundred ninety-eight", and thus it is an aban number.