195306131 has 2 divisors, whose sum is σ = 195306132. Its totient is φ = 195306130.

The previous prime is 195306127. The next prime is 195306143. The reversal of 195306131 is 131603591.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 195306131 - 2² = 195306127 is a prime.

It is a super-2 number, since 2×195306131² = 76288969612378322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 195306094 and 195306103.

It is not a weakly prime, because it can be changed into another prime (195306121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97653065 + 97653066.

It is an arithmetic number, because the mean of its divisors is an integer number (97653066).

Almost surely, 2^195306131 is an apocalyptic number.

195306131 is a deficient number, since it is larger than the sum of its proper divisors (1).

195306131 is an equidigital number, since it uses as much as digits as its factorization.

195306131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 195306131 is about 13975.1969932449. The cubic root of 195306131 is about 580.1922975135.

The spelling of 195306131 in words is "one hundred ninety-five million, three hundred six thousand, one hundred thirty-one".