72344031 has 4 divisors (see below), whose sum is σ = 96458712. Its totient is φ = 48229352.

The previous prime is 72344029. The next prime is 72344033. The reversal of 72344031 is 13044327.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13044327 = 3 ⋅4348109.

It is an interprime number because it is at equal distance from previous prime (72344029) and next prime (72344033).

It is a cyclic number.

It is not a de Polignac number, because 72344031 - 2¹ = 72344029 is a prime.

It is a super-2 number, since 2×72344031² = 10467317642657922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72343992 and 72344010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72344033) 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 3 ways as a sum of consecutive naturals, for example, 12057336 + ... + 12057341.

It is an arithmetic number, because the mean of its divisors is an integer number (24114678).

Almost surely, 2^72344031 is an apocalyptic number.

72344031 is a deficient number, since it is larger than the sum of its proper divisors (24114681).

72344031 is a wasteful number, since it uses less digits than its factorization.

72344031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24114680.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 72344031 is about 8505.5294367841. The cubic root of 72344031 is about 416.6783169720.

Adding to 72344031 its reverse (13044327), we get a palindrome (85388358).

The spelling of 72344031 in words is "seventy-two million, three hundred forty-four thousand, thirty-one".