245031399 has 10 divisors (see below), whose sum is σ = 366034680. Its totient is φ = 163354212.

The previous prime is 245031389. The next prime is 245031401. The reversal of 245031399 is 993130542.

It is a happy number.

It is not a de Polignac number, because 245031399 - 2⁴ = 245031383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245031389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1512459 + ... + 1512620.

It is an arithmetic number, because the mean of its divisors is an integer number (36603468).

Almost surely, 2^245031399 is an apocalyptic number.

245031399 is a deficient number, since it is larger than the sum of its proper divisors (121003281).

245031399 is an equidigital number, since it uses as much as digits as its factorization.

245031399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3025091 (or 3025082 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 245031399 is about 15653.4788146278. The cubic root of 245031399 is about 625.7592045468.

The spelling of 245031399 in words is "two hundred forty-five million, thirty-one thousand, three hundred ninety-nine".