245199231 has 20 divisors (see below), whose sum is σ = 367912600. Its totient is φ = 162740016.

The previous prime is 245199223. The next prime is 245199257. The reversal of 245199231 is 132991542.

245199231 is a `hidden beast` number, since 24 + 519 + 92 + 31 = 666.

It is not a de Polignac number, because 245199231 - 2³ = 245199223 is a prime.

It is a super-2 number, since 2×245199231² = 120245325765982722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245198231) 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 19 ways as a sum of consecutive naturals, for example, 11940 + ... + 25158.

It is an arithmetic number, because the mean of its divisors is an integer number (18395630).

Almost surely, 2^245199231 is an apocalyptic number.

245199231 is a deficient number, since it is larger than the sum of its proper divisors (122713369).

245199231 is a wasteful number, since it uses less digits than its factorization.

245199231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13460 (or 13451 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 245199231 is about 15658.8387500478. The cubic root of 245199231 is about 625.9020412748.

The spelling of 245199231 in words is "two hundred forty-five million, one hundred ninety-nine thousand, two hundred thirty-one".