131543567 has 2 divisors, whose sum is σ = 131543568. Its totient is φ = 131543566.

The previous prime is 131543563. The next prime is 131543641. The reversal of 131543567 is 765345131.

It is a weak prime.

It is an emirp because it is prime and its reverse (765345131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131543567 - 2² = 131543563 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131543561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65771783 + 65771784.

It is an arithmetic number, because the mean of its divisors is an integer number (65771784).

Almost surely, 2^131543567 is an apocalyptic number.

131543567 is a deficient number, since it is larger than the sum of its proper divisors (1).

131543567 is an equidigital number, since it uses as much as digits as its factorization.

131543567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37800, while the sum is 35.

The square root of 131543567 is about 11469.2443953383. The cubic root of 131543567 is about 508.5767920490.

Adding to 131543567 its reverse (765345131), we get a palindrome (896888698).

The spelling of 131543567 in words is "one hundred thirty-one million, five hundred forty-three thousand, five hundred sixty-seven".