71512231030 has 16 divisors (see below), whose sum is σ = 128803565520. Its totient is φ = 28586770272.

The previous prime is 71512231003. The next prime is 71512231031. The reversal of 71512231030 is 3013221517.

It is a happy number.

It is a super-2 number, since 2×71512231030² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71512230986 and 71512231004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71512231031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2248689 + ... + 2280268.

It is an arithmetic number, because the mean of its divisors is an integer number (8050222845).

Almost surely, 2^71512231030 is an apocalyptic number.

71512231030 is a deficient number, since it is larger than the sum of its proper divisors (57291334490).

71512231030 is a wasteful number, since it uses less digits than its factorization.

71512231030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4530543.

The product of its (nonzero) digits is 1260, while the sum is 25.

Adding to 71512231030 its reverse (3013221517), we get a palindrome (74525452547).

The spelling of 71512231030 in words is "seventy-one billion, five hundred twelve million, two hundred thirty-one thousand, thirty".