72200132231 has 4 divisors (see below), whose sum is σ = 72210913464. Its totient is φ = 72189351000.

The previous prime is 72200132219. The next prime is 72200132233. The reversal of 72200132231 is 13223100227.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72200132231 - 2⁶ = 72200132167 is a prime.

It is a super-2 number, since 2×72200132231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72200132197 and 72200132206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72200132233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5380565 + ... + 5393966.

It is an arithmetic number, because the mean of its divisors is an integer number (18052728366).

Almost surely, 2^72200132231 is an apocalyptic number.

72200132231 is a deficient number, since it is larger than the sum of its proper divisors (10781233).

72200132231 is a wasteful number, since it uses less digits than its factorization.

72200132231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10781232.

The product of its (nonzero) digits is 1008, while the sum is 23.

Adding to 72200132231 its reverse (13223100227), we get a palindrome (85423232458).

The spelling of 72200132231 in words is "seventy-two billion, two hundred million, one hundred thirty-two thousand, two hundred thirty-one".