131116001 has 2 divisors, whose sum is σ = 131116002. Its totient is φ = 131116000.

The previous prime is 131115983. The next prime is 131116021. The reversal of 131116001 is 100611131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67897600 + 63218401 = 8240^2 + 7951^2 .

It is a cyclic number.

It is not a de Polignac number, because 131116001 - 2¹⁸ = 130853857 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (131116021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65558000 + 65558001.

It is an arithmetic number, because the mean of its divisors is an integer number (65558001).

Almost surely, 2^131116001 is an apocalyptic number.

It is an amenable number.

131116001 is a deficient number, since it is larger than the sum of its proper divisors (1).

131116001 is an equidigital number, since it uses as much as digits as its factorization.

131116001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 131116001 is about 11450.5895481412. The cubic root of 131116001 is about 508.0251720947.

Adding to 131116001 its reverse (100611131), we get a palindrome (231727132).

The spelling of 131116001 in words is "one hundred thirty-one million, one hundred sixteen thousand, one".