423512261 has 4 divisors (see below), whose sum is σ = 445802400. Its totient is φ = 401222124.

The previous prime is 423512239. The next prime is 423512303. The reversal of 423512261 is 162215324.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423512261 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 423512261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423512861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11145041 + ... + 11145078.

It is an arithmetic number, because the mean of its divisors is an integer number (111450600).

Almost surely, 2^423512261 is an apocalyptic number.

It is an amenable number.

423512261 is a deficient number, since it is larger than the sum of its proper divisors (22290139).

423512261 is a wasteful number, since it uses less digits than its factorization.

423512261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22290138.

The product of its digits is 2880, while the sum is 26.

The square root of 423512261 is about 20579.4135241994. The cubic root of 423512261 is about 750.9689763148.

Adding to 423512261 its reverse (162215324), we get a palindrome (585727585).

The spelling of 423512261 in words is "four hundred twenty-three million, five hundred twelve thousand, two hundred sixty-one".