431234438137 has 4 divisors (see below), whose sum is σ = 445145226496. Its totient is φ = 417323649780.

The previous prime is 431234438123. The next prime is 431234438143. The reversal of 431234438137 is 731834432134.

It is a happy number.

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 cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431234438137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 431234438093 and 431234438102.

It is not an unprimeable number, because it can be changed into a prime (431234438197) 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, 6955394133 + ... + 6955394194.

It is an arithmetic number, because the mean of its divisors is an integer number (111286306624).

Almost surely, 2^431234438137 is an apocalyptic number.

It is an amenable number.

431234438137 is a deficient number, since it is larger than the sum of its proper divisors (13910788359).

431234438137 is a wasteful number, since it uses less digits than its factorization.

431234438137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13910788358.

The product of its digits is 580608, while the sum is 43.

The spelling of 431234438137 in words is "four hundred thirty-one billion, two hundred thirty-four million, four hundred thirty-eight thousand, one hundred thirty-seven".