431738131 has 4 divisors (see below), whose sum is σ = 470987064. Its totient is φ = 392489200.

The previous prime is 431738117. The next prime is 431738161. The reversal of 431738131 is 131837134.

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 431738131 - 2⁷ = 431738003 is a prime.

It is a super-2 number, since 2×431738131² = 372795627518746322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 431738093 and 431738102.

It is not an unprimeable number, because it can be changed into a prime (431738161) 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, 19624450 + ... + 19624471.

It is an arithmetic number, because the mean of its divisors is an integer number (117746766).

Almost surely, 2^431738131 is an apocalyptic number.

431738131 is a deficient number, since it is larger than the sum of its proper divisors (39248933).

431738131 is a wasteful number, since it uses less digits than its factorization.

431738131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39248932.

The product of its digits is 6048, while the sum is 31.

The square root of 431738131 is about 20778.3091468002. The cubic root of 431738131 is about 755.7998517174.

The spelling of 431738131 in words is "four hundred thirty-one million, seven hundred thirty-eight thousand, one hundred thirty-one".