71513230 has 32 divisors (see below), whose sum is σ = 132821856. Its totient is φ = 27702144.

The previous prime is 71513227. The next prime is 71513231. The reversal of 71513230 is 3231517.

It is a super-2 number, since 2×71513230² = 10228284130065800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71513231) 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 15 ways as a sum of consecutive naturals, for example, 128112 + ... + 128668.

It is an arithmetic number, because the mean of its divisors is an integer number (4150683).

Almost surely, 2^71513230 is an apocalyptic number.

71513230 is a deficient number, since it is larger than the sum of its proper divisors (61308626).

71513230 is a wasteful number, since it uses less digits than its factorization.

71513230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 71513230 is about 8456.5495327586. The cubic root of 71513230 is about 415.0771231322.

Adding to 71513230 its reverse (3231517), we get a palindrome (74744747).

The spelling of 71513230 in words is "seventy-one million, five hundred thirteen thousand, two hundred thirty".