72322011031 has 8 divisors (see below), whose sum is σ = 76580418384. Its totient is φ = 68064067200.

The previous prime is 72322011029. The next prime is 72322011037. The reversal of 72322011031 is 13011022327.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72322011031 - 2¹ = 72322011029 is a prime.

It is a super-2 number, since 2×72322011031² (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 = 72322010993 and 72322011011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72322011037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235896 + ... + 447538.

It is an arithmetic number, because the mean of its divisors is an integer number (9572552298).

Almost surely, 2^72322011031 is an apocalyptic number.

72322011031 is a deficient number, since it is larger than the sum of its proper divisors (4258407353).

72322011031 is a wasteful number, since it uses less digits than its factorization.

72322011031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231761.

The product of its (nonzero) digits is 504, while the sum is 22.

Adding to 72322011031 its reverse (13011022327), we get a palindrome (85333033358).

The spelling of 72322011031 in words is "seventy-two billion, three hundred twenty-two million, eleven thousand, thirty-one".