731138011 has 4 divisors (see below), whose sum is σ = 731368224. Its totient is φ = 730907800.

The previous prime is 731137991. The next prime is 731138027. The reversal of 731138011 is 110831137.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-731138011 is a prime.

It is a super-2 number, since 2×731138011² = 1069125582258072242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (731138041) 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 3 ways as a sum of consecutive naturals, for example, 110275 + ... + 116716.

It is an arithmetic number, because the mean of its divisors is an integer number (182842056).

Almost surely, 2^731138011 is an apocalyptic number.

731138011 is a deficient number, since it is larger than the sum of its proper divisors (230213).

731138011 is a wasteful number, since it uses less digits than its factorization.

731138011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230212.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 731138011 is about 27039.5638093517. The cubic root of 731138011 is about 900.8789811850.

Adding to 731138011 its reverse (110831137), we get a palindrome (841969148).

The spelling of 731138011 in words is "seven hundred thirty-one million, one hundred thirty-eight thousand, eleven".