131634193 has 2 divisors, whose sum is σ = 131634194. Its totient is φ = 131634192.

The previous prime is 131634131. The next prime is 131634203. The reversal of 131634193 is 391436131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82955664 + 48678529 = 9108^2 + 6977^2 .

It is a cyclic number.

It is not a de Polignac number, because 131634193 - 2⁹ = 131633681 is a prime.

It is a super-2 number, since 2×131634193² = 34655121533522498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (131644193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65817096 + 65817097.

It is an arithmetic number, because the mean of its divisors is an integer number (65817097).

Almost surely, 2^131634193 is an apocalyptic number.

It is an amenable number.

131634193 is a deficient number, since it is larger than the sum of its proper divisors (1).

131634193 is an equidigital number, since it uses as much as digits as its factorization.

131634193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 31.

The square root of 131634193 is about 11473.1945420619. The cubic root of 131634193 is about 508.6935586861.

The spelling of 131634193 in words is "one hundred thirty-one million, six hundred thirty-four thousand, one hundred ninety-three".