423231149 has 4 divisors (see below), whose sum is σ = 461706720. Its totient is φ = 384755580.

The previous prime is 423231143. The next prime is 423231173. The reversal of 423231149 is 941132324.

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 de Polignac number, because none of the positive numbers 2^k-423231149 is a prime.

It is a super-3 number, since 3×423231149³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423231143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19237769 + ... + 19237790.

It is an arithmetic number, because the mean of its divisors is an integer number (115426680).

Almost surely, 2^423231149 is an apocalyptic number.

It is an amenable number.

423231149 is a deficient number, since it is larger than the sum of its proper divisors (38475571).

423231149 is a wasteful number, since it uses less digits than its factorization.

423231149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38475570.

The product of its digits is 5184, while the sum is 29.

The square root of 423231149 is about 20572.5824582137. The cubic root of 423231149 is about 750.8027842618.

The spelling of 423231149 in words is "four hundred twenty-three million, two hundred thirty-one thousand, one hundred forty-nine".