72100044031 has 8 divisors (see below), whose sum is σ = 73487985984. Its totient is φ = 70725258240.

The previous prime is 72100044011. The next prime is 72100044053. The reversal of 72100044031 is 13044000127.

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 72100044031 - 2⁷ = 72100043903 is a prime.

It is a super-2 number, since 2×72100044031² (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 = 72100043993 and 72100044011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72100044011) 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, 3277975 + ... + 3299896.

It is an arithmetic number, because the mean of its divisors is an integer number (9185998248).

Almost surely, 2^72100044031 is an apocalyptic number.

72100044031 is a deficient number, since it is larger than the sum of its proper divisors (1387941953).

72100044031 is a wasteful number, since it uses less digits than its factorization.

72100044031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6578081.

The product of its (nonzero) digits is 672, while the sum is 22.

Adding to 72100044031 its reverse (13044000127), we get a palindrome (85144044158).

The spelling of 72100044031 in words is "seventy-two billion, one hundred million, forty-four thousand, thirty-one".