727712431 has 4 divisors (see below), whose sum is σ = 740046600. Its totient is φ = 715378264.

The previous prime is 727712423. The next prime is 727712471. The reversal of 727712431 is 134217727.

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 727712431 - 2³ = 727712423 is a prime.

It is a super-2 number, since 2×727712431² = 1059130764463859522, 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 (727712471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6166996 + ... + 6167113.

It is an arithmetic number, because the mean of its divisors is an integer number (185011650).

Almost surely, 2^727712431 is an apocalyptic number.

727712431 is a deficient number, since it is larger than the sum of its proper divisors (12334169).

727712431 is a wasteful number, since it uses less digits than its factorization.

727712431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12334168.

The product of its digits is 16464, while the sum is 34.

The square root of 727712431 is about 26976.1455919855. The cubic root of 727712431 is about 899.4698239568.

The spelling of 727712431 in words is "seven hundred twenty-seven million, seven hundred twelve thousand, four hundred thirty-one".