131198201 has 2 divisors, whose sum is σ = 131198202. Its totient is φ = 131198200.

The previous prime is 131198191. The next prime is 131198209. The reversal of 131198201 is 102891131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120472576 + 10725625 = 10976^2 + 3275^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131198201 is a prime.

It is equal to p_7442351 and since 131198201 and 7442351 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (131198209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65599100 + 65599101.

It is an arithmetic number, because the mean of its divisors is an integer number (65599101).

Almost surely, 2^131198201 is an apocalyptic number.

It is an amenable number.

131198201 is a deficient number, since it is larger than the sum of its proper divisors (1).

131198201 is an equidigital number, since it uses as much as digits as its factorization.

131198201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 26.

The square root of 131198201 is about 11454.1783205955. The cubic root of 131198201 is about 508.1313146075.

The spelling of 131198201 in words is "one hundred thirty-one million, one hundred ninety-eight thousand, two hundred one".