723270281 has 2 divisors, whose sum is σ = 723270282. Its totient is φ = 723270280.

The previous prime is 723270241. The next prime is 723270307. The reversal of 723270281 is 182072327.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 723125881 + 144400 = 26891^2 + 380^2 .

It is a cyclic number.

It is not a de Polignac number, because 723270281 - 2¹⁸ = 723008137 is a prime.

It is a super-2 number, since 2×723270281² = 1046239798755637922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (723270211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361635140 + 361635141.

It is an arithmetic number, because the mean of its divisors is an integer number (361635141).

Almost surely, 2^723270281 is an apocalyptic number.

It is an amenable number.

723270281 is a deficient number, since it is larger than the sum of its proper divisors (1).

723270281 is an equidigital number, since it uses as much as digits as its factorization.

723270281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 723270281 is about 26893.6847791447. The cubic root of 723270281 is about 897.6358863469.

The spelling of 723270281 in words is "seven hundred twenty-three million, two hundred seventy thousand, two hundred eighty-one".