194250031 has 2 divisors, whose sum is σ = 194250032. Its totient is φ = 194250030.

The previous prime is 194249989. The next prime is 194250083. The reversal of 194250031 is 130052491.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 194250031 - 2¹⁷ = 194118959 is a prime.

It is a super-2 number, since 2×194250031² = 75466149087001922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 194249978 and 194250005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194250431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97125015 + 97125016.

It is an arithmetic number, because the mean of its divisors is an integer number (97125016).

Almost surely, 2^194250031 is an apocalyptic number.

194250031 is a deficient number, since it is larger than the sum of its proper divisors (1).

194250031 is an equidigital number, since it uses as much as digits as its factorization.

194250031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 194250031 is about 13937.3609768851. The cubic root of 194250031 is about 579.1446279579.

The spelling of 194250031 in words is "one hundred ninety-four million, two hundred fifty thousand, thirty-one".