131498387 has 2 divisors, whose sum is σ = 131498388. Its totient is φ = 131498386.

The previous prime is 131498377. The next prime is 131498401. The reversal of 131498387 is 783894131.

It is a weak prime.

It is an emirp because it is prime and its reverse (783894131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131498387 - 2¹² = 131494291 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (131498317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65749193 + 65749194.

It is an arithmetic number, because the mean of its divisors is an integer number (65749194).

Almost surely, 2^131498387 is an apocalyptic number.

131498387 is a deficient number, since it is larger than the sum of its proper divisors (1).

131498387 is an equidigital number, since it uses as much as digits as its factorization.

131498387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 44.

The square root of 131498387 is about 11467.2746108219. The cubic root of 131498387 is about 508.5185600601.

The spelling of 131498387 in words is "one hundred thirty-one million, four hundred ninety-eight thousand, three hundred eighty-seven".