131436419 has 2 divisors, whose sum is σ = 131436420. Its totient is φ = 131436418.

The previous prime is 131436397. The next prime is 131436443. The reversal of 131436419 is 914634131.

It is a weak prime.

It is an emirp because it is prime and its reverse (914634131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131436419 is a prime.

It is a super-2 number, since 2×131436419² = 34551064479087122, which contains 22 as substring.

It is a Chen prime.

It is equal to p_7455092 and since 131436419 and 7455092 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (131436499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65718209 + 65718210.

It is an arithmetic number, because the mean of its divisors is an integer number (65718210).

Almost surely, 2^131436419 is an apocalyptic number.

131436419 is a deficient number, since it is larger than the sum of its proper divisors (1).

131436419 is an equidigital number, since it uses as much as digits as its factorization.

131436419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 32.

The square root of 131436419 is about 11464.5723426563. The cubic root of 131436419 is about 508.4386685114.

The spelling of 131436419 in words is "one hundred thirty-one million, four hundred thirty-six thousand, four hundred nineteen".