731120971 has 4 divisors (see below), whose sum is σ = 835566832. Its totient is φ = 626675112.

The previous prime is 731120963. The next prime is 731120981. The reversal of 731120971 is 179021137.

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

It is not a de Polignac number, because 731120971 - 2³ = 731120963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (731120911) 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, 52222920 + ... + 52222933.

It is an arithmetic number, because the mean of its divisors is an integer number (208891708).

Almost surely, 2^731120971 is an apocalyptic number.

731120971 is a deficient number, since it is larger than the sum of its proper divisors (104445861).

731120971 is a wasteful number, since it uses less digits than its factorization.

731120971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104445860.

The product of its (nonzero) digits is 2646, while the sum is 31.

The square root of 731120971 is about 27039.2487136755. The cubic root of 731120971 is about 900.8719824620.

It can be divided in two parts, 7311 and 20971, that added together give a palindrome (28282).

The spelling of 731120971 in words is "seven hundred thirty-one million, one hundred twenty thousand, nine hundred seventy-one".