131030047 has 2 divisors, whose sum is σ = 131030048. Its totient is φ = 131030046.

The previous prime is 131029993. The next prime is 131030069. The reversal of 131030047 is 740030131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131030047 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131030147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65515023 + 65515024.

It is an arithmetic number, because the mean of its divisors is an integer number (65515024).

Almost surely, 2^131030047 is an apocalyptic number.

131030047 is a deficient number, since it is larger than the sum of its proper divisors (1).

131030047 is an equidigital number, since it uses as much as digits as its factorization.

131030047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 131030047 is about 11446.8356762906. The cubic root of 131030047 is about 507.9141346906.

Adding to 131030047 its reverse (740030131), we get a palindrome (871060178).

The spelling of 131030047 in words is "one hundred thirty-one million, thirty thousand, forty-seven".