131128097 has 2 divisors, whose sum is σ = 131128098. Its totient is φ = 131128096.

The previous prime is 131128087. The next prime is 131128103. The reversal of 131128097 is 790821131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75759616 + 55368481 = 8704^2 + 7441^2 .

It is a cyclic number.

It is not a de Polignac number, because 131128097 - 2¹⁴ = 131111713 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (131128007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65564048 + 65564049.

It is an arithmetic number, because the mean of its divisors is an integer number (65564049).

Almost surely, 2^131128097 is an apocalyptic number.

It is an amenable number.

131128097 is a deficient number, since it is larger than the sum of its proper divisors (1).

131128097 is an equidigital number, since it uses as much as digits as its factorization.

131128097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 131128097 is about 11451.1177183714. The cubic root of 131128097 is about 508.0407940973.

The spelling of 131128097 in words is "one hundred thirty-one million, one hundred twenty-eight thousand, ninety-seven".