423400131 has 36 divisors (see below), whose sum is σ = 776111544. Its totient is φ = 219945600.

The previous prime is 423400129. The next prime is 423400141. The reversal of 423400131 is 131004324.

It is not a de Polignac number, because 423400131 - 2¹ = 423400129 is a prime.

It is a super-2 number, since 2×423400131² = 358535341861634322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (423400141) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 38790 + ... + 48491.

It is an arithmetic number, because the mean of its divisors is an integer number (21558654).

Almost surely, 2^423400131 is an apocalyptic number.

423400131 is a deficient number, since it is larger than the sum of its proper divisors (352711413).

423400131 is a wasteful number, since it uses less digits than its factorization.

423400131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87312 (or 87302 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 423400131 is about 20576.6890193734. The cubic root of 423400131 is about 750.9026944212.

Adding to 423400131 its reverse (131004324), we get a palindrome (554404455).

The spelling of 423400131 in words is "four hundred twenty-three million, four hundred thousand, one hundred thirty-one".