131128651 has 2 divisors, whose sum is σ = 131128652. Its totient is φ = 131128650.

The previous prime is 131128609. The next prime is 131128663. The reversal of 131128651 is 156821131.

It is a strong prime.

It is an emirp because it is prime and its reverse (156821131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131128651 is a prime.

It is a super-2 number, since 2×131128651² = 34389446226159602, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (131128601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65564325 + 65564326.

It is an arithmetic number, because the mean of its divisors is an integer number (65564326).

Almost surely, 2^131128651 is an apocalyptic number.

131128651 is a deficient number, since it is larger than the sum of its proper divisors (1).

131128651 is an equidigital number, since it uses as much as digits as its factorization.

131128651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 28.

The square root of 131128651 is about 11451.1419081243. The cubic root of 131128651 is about 508.0415095661.

Adding to 131128651 its reverse (156821131), we get a palindrome (287949782).

The spelling of 131128651 in words is "one hundred thirty-one million, one hundred twenty-eight thousand, six hundred fifty-one".