245230031 has 4 divisors (see below), whose sum is σ = 246018864. Its totient is φ = 244441200.

The previous prime is 245230021. The next prime is 245230033. The reversal of 245230031 is 130032542.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245230031 is a prime.

It is a super-2 number, since 2×245230031² = 120275536208521922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 245229985 and 245230012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245230033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 393950 + ... + 394571.

It is an arithmetic number, because the mean of its divisors is an integer number (61504716).

Almost surely, 2^245230031 is an apocalyptic number.

245230031 is a deficient number, since it is larger than the sum of its proper divisors (788833).

245230031 is an equidigital number, since it uses as much as digits as its factorization.

245230031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788832.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 245230031 is about 15659.8221892843. The cubic root of 245230031 is about 625.9282471424.

Adding to 245230031 its reverse (130032542), we get a palindrome (375262573).

The spelling of 245230031 in words is "two hundred forty-five million, two hundred thirty thousand, thirty-one".