431425887 has 4 divisors (see below), whose sum is σ = 575234520. Its totient is φ = 287617256.

The previous prime is 431425871. The next prime is 431425961. The reversal of 431425887 is 788524134.

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 431425887 - 2⁴ = 431425871 is a prime.

It is a super-2 number, since 2×431425887² = 372256591947473538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431425807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71904312 + ... + 71904317.

It is an arithmetic number, because the mean of its divisors is an integer number (143808630).

Almost surely, 2^431425887 is an apocalyptic number.

431425887 is a deficient number, since it is larger than the sum of its proper divisors (143808633).

431425887 is a wasteful number, since it uses less digits than its factorization.

431425887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143808632.

The product of its digits is 215040, while the sum is 42.

The square root of 431425887 is about 20770.7940868904. The cubic root of 431425887 is about 755.6176032145.

The spelling of 431425887 in words is "four hundred thirty-one million, four hundred twenty-five thousand, eight hundred eighty-seven".