731472361 has 2 divisors, whose sum is σ = 731472362. Its totient is φ = 731472360.

The previous prime is 731472359. The next prime is 731472367. The reversal of 731472361 is 163274137.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 728730025 + 2742336 = 26995^2 + 1656^2 .

It is a cyclic number.

It is not a de Polignac number, because 731472361 - 2¹ = 731472359 is a prime.

Together with 731472359, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (731472367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 365736180 + 365736181.

It is an arithmetic number, because the mean of its divisors is an integer number (365736181).

Almost surely, 2^731472361 is an apocalyptic number.

It is an amenable number.

731472361 is a deficient number, since it is larger than the sum of its proper divisors (1).

731472361 is an equidigital number, since it uses as much as digits as its factorization.

731472361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 34.

The square root of 731472361 is about 27045.7457098154. The cubic root of 731472361 is about 901.0162844848.

The spelling of 731472361 in words is "seven hundred thirty-one million, four hundred seventy-two thousand, three hundred sixty-one".