71434531 has 16 divisors (see below), whose sum is σ = 84881664. Its totient is φ = 58839264.

The previous prime is 71434499. The next prime is 71434537. The reversal of 71434531 is 13543417.

It is a cyclic number.

It is not a de Polignac number, because 71434531 - 2⁵ = 71434499 is a prime.

It is a super-2 number, since 2×71434531² = 10205784438379922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71434531.

It is not an unprimeable number, because it can be changed into a prime (71434537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19836 + ... + 23158.

It is an arithmetic number, because the mean of its divisors is an integer number (5305104).

Almost surely, 2^71434531 is an apocalyptic number.

71434531 is a deficient number, since it is larger than the sum of its proper divisors (13447133).

71434531 is a wasteful number, since it uses less digits than its factorization.

71434531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3450.

The product of its digits is 5040, while the sum is 28.

The square root of 71434531 is about 8451.8951129318. The cubic root of 71434531 is about 414.9248056534.

Adding to 71434531 its reverse (13543417), we get a palindrome (84977948).

It can be divided in two parts, 714 and 34531, that added together give a triangular number (35245 = T₂₆₅).

The spelling of 71434531 in words is "seventy-one million, four hundred thirty-four thousand, five hundred thirty-one".