423131 has 4 divisors (see below), whose sum is σ = 441552. Its totient is φ = 404712.

The previous prime is 423127. The next prime is 423133. The reversal of 423131 is 131324.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 423131 - 2² = 423127 is a prime.

It is a super-2 number, since 2×423131² = 358079686322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423133) 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, 9176 + ... + 9221.

It is an arithmetic number, because the mean of its divisors is an integer number (110388).

2⁴²³¹³¹ is an apocalyptic number.

423131 is a deficient number, since it is larger than the sum of its proper divisors (18421).

423131 is a wasteful number, since it uses less digits than its factorization.

423131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18420.

The product of its digits is 72, while the sum is 14.

The square root of 423131 is about 650.4852035212. The cubic root of 423131 is about 75.0743558880.

Adding to 423131 its reverse (131324), we get a palindrome (554455).

The spelling of 423131 in words is "four hundred twenty-three thousand, one hundred thirty-one".