250031 has 2 divisors, whose sum is σ = 250032. Its totient is φ = 250030.

The previous prime is 250027. The next prime is 250037. The reversal of 250031 is 130052.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 250031 - 2² = 250027 is a prime.

It is a super-2 number, since 2×250031² = 125031001922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 249994 and 250021.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 250031.

It is not a weakly prime, because it can be changed into another prime (250037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125015 + 125016.

It is an arithmetic number, because the mean of its divisors is an integer number (125016).

250031 is a Friedman number, since it can be written as 500^2+31, using all its digits and the basic arithmetic operations.

2²⁵⁰⁰³¹ is an apocalyptic number.

250031 is a deficient number, since it is larger than the sum of its proper divisors (1).

250031 is an equidigital number, since it uses as much as digits as its factorization.

250031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30, while the sum is 11.

The square root of 250031 is about 500.0309990391. The cubic root of 250031 is about 62.9986562240.

Adding to 250031 its reverse (130052), we get a palindrome (380083).

The spelling of 250031 in words is "two hundred fifty thousand, thirty-one".