8438071431 has 24 divisors (see below), whose sum is σ = 12011804800. Its totient is φ = 5267763072.

The previous prime is 8438071427. The next prime is 8438071463. The reversal of 8438071431 is 1341708348.

It is not a de Polignac number, because 8438071431 - 2² = 8438071427 is a prime.

It is a super-2 number, since 2×8438071431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8438071431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8438076431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 148080 + ... + 196986.

Almost surely, 2^8438071431 is an apocalyptic number.

8438071431 is a deficient number, since it is larger than the sum of its proper divisors (3573733369).

8438071431 is a wasteful number, since it uses less digits than its factorization.

8438071431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49143 (or 49126 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 8438071431 is about 91858.9757780915. The cubic root of 8438071431 is about 2035.8591699975.

Adding to 8438071431 its reverse (1341708348), we get a palindrome (9779779779).

The spelling of 8438071431 in words is "eight billion, four hundred thirty-eight million, seventy-one thousand, four hundred thirty-one".