131004427 has 2 divisors, whose sum is σ = 131004428. Its totient is φ = 131004426.

The previous prime is 131004421. The next prime is 131004439. The reversal of 131004427 is 724400131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131004427 - 2⁷ = 131004299 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131004398 and 131004407.

It is not a weakly prime, because it can be changed into another prime (131004421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65502213 + 65502214.

It is an arithmetic number, because the mean of its divisors is an integer number (65502214).

Almost surely, 2^131004427 is an apocalyptic number.

131004427 is a deficient number, since it is larger than the sum of its proper divisors (1).

131004427 is an equidigital number, since it uses as much as digits as its factorization.

131004427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 131004427 is about 11445.7165350187. The cubic root of 131004427 is about 507.8810287768.

Adding to 131004427 its reverse (724400131), we get a palindrome (855404558).

The spelling of 131004427 in words is "one hundred thirty-one million, four thousand, four hundred twenty-seven".