423155513 has 8 divisors (see below), whose sum is σ = 465440736. Its totient is φ = 384685620.

The previous prime is 423155503. The next prime is 423155519. The reversal of 423155513 is 315551324.

It is not a de Polignac number, because 423155513 - 2¹⁶ = 423089977 is a prime.

It is a super-3 number, since 3×423155513³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423155519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157631 + ... + 160292.

It is an arithmetic number, because the mean of its divisors is an integer number (58180092).

Almost surely, 2^423155513 is an apocalyptic number.

It is an amenable number.

423155513 is a deficient number, since it is larger than the sum of its proper divisors (42285223).

423155513 is an equidigital number, since it uses as much as digits as its factorization.

423155513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317956 (or 317934 counting only the distinct ones).

The product of its digits is 9000, while the sum is 29.

The square root of 423155513 is about 20570.7441041884. The cubic root of 423155513 is about 750.7580560617.

The spelling of 423155513 in words is "four hundred twenty-three million, one hundred fifty-five thousand, five hundred thirteen".