423231019 has 2 divisors, whose sum is σ = 423231020. Its totient is φ = 423231018.

The previous prime is 423231007. The next prime is 423231037. The reversal of 423231019 is 910132324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 423231019 - 2¹⁷ = 423099947 is a prime.

It is a super-2 number, since 2×423231019² = 358248990887556722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 423230984 and 423231002.

It is not a weakly prime, because it can be changed into another prime (423231719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211615509 + 211615510.

It is an arithmetic number, because the mean of its divisors is an integer number (211615510).

Almost surely, 2^423231019 is an apocalyptic number.

423231019 is a deficient number, since it is larger than the sum of its proper divisors (1).

423231019 is an equidigital number, since it uses as much as digits as its factorization.

423231019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 423231019 is about 20572.5792986684. The cubic root of 423231019 is about 750.8027073894.

The spelling of 423231019 in words is "four hundred twenty-three million, two hundred thirty-one thousand, nineteen".