72070000831 has 8 divisors (see below), whose sum is σ = 76803554304. Its totient is φ = 67469787000.

The previous prime is 72070000819. The next prime is 72070000853. The reversal of 72070000831 is 13800007027.

72070000831 = T₂₁₉₁₉₄ + T₂₁₉₁₉₅ + T₂₁₉₁₉₆.

It is a happy number.

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

It is not a de Polignac number, because 72070000831 - 2⁵ = 72070000799 is a prime.

It is a super-2 number, since 2×72070000831² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72070000831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72070001831) 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, 33333795 + ... + 33335956.

It is an arithmetic number, because the mean of its divisors is an integer number (9600444288).

Almost surely, 2^72070000831 is an apocalyptic number.

72070000831 is the 219196-th centered triangular number.

72070000831 is a deficient number, since it is larger than the sum of its proper divisors (4733553473).

72070000831 is a wasteful number, since it uses less digits than its factorization.

72070000831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66669821.

The product of its (nonzero) digits is 2352, while the sum is 28.

Adding to 72070000831 its reverse (13800007027), we get a palindrome (85870007858).

The spelling of 72070000831 in words is "seventy-two billion, seventy million, eight hundred thirty-one", and thus it is an aban number.