731606724249 has 16 divisors (see below), whose sum is σ = 995060582208. Its totient is φ = 478019247552.

The previous prime is 731606724217. The next prime is 731606724259. The reversal of 731606724249 is 942427606137.

It is a happy number.

731606724249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 731606724249 - 2⁵ = 731606724217 is a prime.

It is a super-2 number, since 2×731606724249² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (731606724259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9198562 + ... + 9277755.

It is an arithmetic number, because the mean of its divisors is an integer number (62191286388).

Almost surely, 2^731606724249 is an apocalyptic number.

It is an amenable number.

731606724249 is a deficient number, since it is larger than the sum of its proper divisors (263453857959).

731606724249 is a wasteful number, since it uses less digits than its factorization.

731606724249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18476584.

The product of its (nonzero) digits is 3048192, while the sum is 51.

The spelling of 731606724249 in words is "seven hundred thirty-one billion, six hundred six million, seven hundred twenty-four thousand, two hundred forty-nine".