731000738051 has 4 divisors (see below), whose sum is σ = 738536828232. Its totient is φ = 723464647872.

The previous prime is 731000738047. The next prime is 731000738207. The reversal of 731000738051 is 150837000137.

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 731000738051 - 2² = 731000738047 is a prime.

It is a super-2 number, since 2×731000738051² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (731000708051) 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, 3768044945 + ... + 3768045138.

It is an arithmetic number, because the mean of its divisors is an integer number (184634207058).

Almost surely, 2^731000738051 is an apocalyptic number.

731000738051 is a deficient number, since it is larger than the sum of its proper divisors (7536090181).

731000738051 is an equidigital number, since it uses as much as digits as its factorization.

731000738051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7536090180.

The product of its (nonzero) digits is 17640, while the sum is 35.

Adding to 731000738051 its reverse (150837000137), we get a palindrome (881837738188).

The spelling of 731000738051 in words is "seven hundred thirty-one billion, seven hundred thirty-eight thousand, fifty-one".