201199931 has 2 divisors, whose sum is σ = 201199932. Its totient is φ = 201199930.

The previous prime is 201199919. The next prime is 201199937. The reversal of 201199931 is 139991102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201199931 is a prime.

It is a super-2 number, since 2×201199931² = 80962824468809522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 201199891 and 201199900.

It is not a weakly prime, because it can be changed into another prime (201199937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100599965 + 100599966.

It is an arithmetic number, because the mean of its divisors is an integer number (100599966).

Almost surely, 2^201199931 is an apocalyptic number.

201199931 is a deficient number, since it is larger than the sum of its proper divisors (1).

201199931 is an equidigital number, since it uses as much as digits as its factorization.

201199931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4374, while the sum is 35.

The square root of 201199931 is about 14184.4961489649. The cubic root of 201199931 is about 585.9707563053.

The spelling of 201199931 in words is "two hundred one million, one hundred ninety-nine thousand, nine hundred thirty-one".