245031 has 4 divisors (see below), whose sum is σ = 326712. Its totient is φ = 163352.

The previous prime is 245029. The next prime is 245033. The reversal of 245031 is 130542.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (245029) and next prime (245033).

It is a cyclic number.

It is not a de Polignac number, because 245031 - 2¹ = 245029 is a prime.

It is a super-2 number, since 2×245031² = 120080381922, which contains 22 as substring.

It is a D-number.

245031 is a lucky number.

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 245031.

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 245031.

It is not an unprimeable number, because it can be changed into a prime (245033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40836 + ... + 40841.

It is an arithmetic number, because the mean of its divisors is an integer number (81678).

2²⁴⁵⁰³¹ is an apocalyptic number.

245031 is a deficient number, since it is larger than the sum of its proper divisors (81681).

245031 is an equidigital number, since it uses as much as digits as its factorization.

245031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81680.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 245031 is about 495.0060605690. The cubic root of 245031 is about 62.5758864892.

Adding to 245031 its reverse (130542), we get a palindrome (375573).

The spelling of 245031 in words is "two hundred forty-five thousand, thirty-one".