131065619 has 2 divisors, whose sum is σ = 131065620. Its totient is φ = 131065618.

The previous prime is 131065603. The next prime is 131065621. The reversal of 131065619 is 916560131.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131065619 - 2⁴ = 131065603 is a prime.

It is a super-2 number, since 2×131065619² = 34356392967706322, which contains 22 as substring.

Together with 131065621, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (131065679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65532809 + 65532810.

It is an arithmetic number, because the mean of its divisors is an integer number (65532810).

Almost surely, 2^131065619 is an apocalyptic number.

131065619 is a deficient number, since it is larger than the sum of its proper divisors (1).

131065619 is an equidigital number, since it uses as much as digits as its factorization.

131065619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 131065619 is about 11448.3893627008. The cubic root of 131065619 is about 507.9600933270.

The spelling of 131065619 in words is "one hundred thirty-one million, sixty-five thousand, six hundred nineteen".