423263261 has 2 divisors, whose sum is σ = 423263262. Its totient is φ = 423263260.

The previous prime is 423263237. The next prime is 423263279. The reversal of 423263261 is 162362324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 299497636 + 123765625 = 17306^2 + 11125^2 .

It is a cyclic number.

It is not a de Polignac number, because 423263261 - 2¹⁰ = 423262237 is a prime.

It is a super-2 number, since 2×423263261² = 358303576224708242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423269261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211631630 + 211631631.

It is an arithmetic number, because the mean of its divisors is an integer number (211631631).

Almost surely, 2^423263261 is an apocalyptic number.

It is an amenable number.

423263261 is a deficient number, since it is larger than the sum of its proper divisors (1).

423263261 is an equidigital number, since it uses as much as digits as its factorization.

423263261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 29.

The square root of 423263261 is about 20573.3628996331. The cubic root of 423263261 is about 750.8217724431.

The spelling of 423263261 in words is "four hundred twenty-three million, two hundred sixty-three thousand, two hundred sixty-one".