71213232 has 40 divisors (see below), whose sum is σ = 184273920. Its totient is φ = 23698240.

The previous prime is 71213227. The next prime is 71213237. The reversal of 71213232 is 23231217.

It is an interprime number because it is at equal distance from previous prime (71213227) and next prime (71213237).

It is a junction number, because it is equal to n+sod(n) for n = 71213199 and 71213208.

It is not an unprimeable number, because it can be changed into a prime (71213237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48769 + ... + 50207.

It is an arithmetic number, because the mean of its divisors is an integer number (4606848).

Almost surely, 2^71213232 is an apocalyptic number.

It is an amenable number.

71213232 is an abundant number, since it is smaller than the sum of its proper divisors (113060688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71213232 is a wasteful number, since it uses less digits than its factorization.

71213232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2481 (or 2475 counting only the distinct ones).

The product of its digits is 504, while the sum is 21.

The square root of 71213232 is about 8438.7932786625. The cubic root of 71213232 is about 414.4958934426.

Adding to 71213232 its reverse (23231217), we get a palindrome (94444449).

The spelling of 71213232 in words is "seventy-one million, two hundred thirteen thousand, two hundred thirty-two".