72279233322031 has 4 divisors (see below), whose sum is σ = 72324892978272. Its totient is φ = 72233573665792.

The previous prime is 72279233321951. The next prime is 72279233322053. The reversal of 72279233322031 is 13022333297227.

It is a happy number.

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 72279233322031 - 2¹¹ = 72279233319983 is a prime.

It is a super-2 number, since 2×72279233322031² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72279233322061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22829825746 + ... + 22829828911.

It is an arithmetic number, because the mean of its divisors is an integer number (18081223244568).

Almost surely, 2^{72279233322031} is an apocalyptic number.

72279233322031 is a deficient number, since it is larger than the sum of its proper divisors (45659656241).

72279233322031 is a wasteful number, since it uses less digits than its factorization.

72279233322031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45659656240.

The product of its (nonzero) digits is 1143072, while the sum is 46.

The spelling of 72279233322031 in words is "seventy-two trillion, two hundred seventy-nine billion, two hundred thirty-three million, three hundred twenty-two thousand, thirty-one".