245140031 has 2 divisors, whose sum is σ = 245140032. Its totient is φ = 245140030.

The previous prime is 245140013. The next prime is 245140039. The reversal of 245140031 is 130041542.

Together with previous prime (245140013) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 245140031 - 2⁶ = 245139967 is a prime.

It is a super-4 number, since 4×245140031⁴ (a number of 35 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 245139985 and 245140012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245140039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122570015 + 122570016.

It is an arithmetic number, because the mean of its divisors is an integer number (122570016).

Almost surely, 2^245140031 is an apocalyptic number.

245140031 is a deficient number, since it is larger than the sum of its proper divisors (1).

245140031 is an equidigital number, since it uses as much as digits as its factorization.

245140031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 245140031 is about 15656.9483297353. The cubic root of 245140031 is about 625.8516653919.

Adding to 245140031 its reverse (130041542), we get a palindrome (375181573).

The spelling of 245140031 in words is "two hundred forty-five million, one hundred forty thousand, thirty-one".