71244133431 has 8 divisors (see below), whose sum is σ = 97309060464. Its totient is φ = 46337647680.

The previous prime is 71244133397. The next prime is 71244133463. The reversal of 71244133431 is 13433144217.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71244133431 - 2¹⁴ = 71244117047 is a prime.

It is a super-4 number, since 4×71244133431⁴ (a number of 45 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 71244133392 and 71244133401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71244183431) 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 7 ways as a sum of consecutive naturals, for example, 289610176 + ... + 289610421.

It is an arithmetic number, because the mean of its divisors is an integer number (12163632558).

Almost surely, 2^71244133431 is an apocalyptic number.

71244133431 is a deficient number, since it is larger than the sum of its proper divisors (26064927033).

71244133431 is a wasteful number, since it uses less digits than its factorization.

71244133431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579220641.

The product of its digits is 24192, while the sum is 33.

Adding to 71244133431 its reverse (13433144217), we get a palindrome (84677277648).

The spelling of 71244133431 in words is "seventy-one billion, two hundred forty-four million, one hundred thirty-three thousand, four hundred thirty-one".