245000731 has 4 divisors (see below), whose sum is σ = 245113264. Its totient is φ = 244888200.

The previous prime is 245000699. The next prime is 245000747. The reversal of 245000731 is 137000542.

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

It is a cyclic number.

It is not a de Polignac number, because 245000731 - 2⁵ = 245000699 is a prime.

It is a super-2 number, since 2×245000731² = 120050716381068722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245000131) 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, 52935 + ... + 57376.

It is an arithmetic number, because the mean of its divisors is an integer number (61278316).

Almost surely, 2^245000731 is an apocalyptic number.

245000731 is a deficient number, since it is larger than the sum of its proper divisors (112533).

245000731 is a wasteful number, since it uses less digits than its factorization.

245000731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112532.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 245000731 is about 15652.4991934196. The cubic root of 245000731 is about 625.7330968941.

The spelling of 245000731 in words is "two hundred forty-five million, seven hundred thirty-one", and thus it is an aban number.