71449431 has 8 divisors (see below), whose sum is σ = 99408000. Its totient is φ = 45561912.

The previous prime is 71449397. The next prime is 71449463. The reversal of 71449431 is 13494417.

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

It is not a de Polignac number, because 71449431 - 2¹⁵ = 71416663 is a prime.

It is a super-2 number, since 2×71449431² = 10210042380447522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71449392 and 71449401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71442431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 517681 + ... + 517818.

It is an arithmetic number, because the mean of its divisors is an integer number (12426000).

Almost surely, 2^71449431 is an apocalyptic number.

71449431 is a deficient number, since it is larger than the sum of its proper divisors (27958569).

71449431 is a wasteful number, since it uses less digits than its factorization.

71449431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035525.

The product of its digits is 12096, while the sum is 33.

The square root of 71449431 is about 8452.7765260889. The cubic root of 71449431 is about 414.9536523457.

The spelling of 71449431 in words is "seventy-one million, four hundred forty-nine thousand, four hundred thirty-one".