320040215031 has 8 divisors (see below), whose sum is σ = 427486393584. Its totient is φ = 212977089920.

The previous prime is 320040215021. The next prime is 320040215039. The reversal of 320040215031 is 130512040023.

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 320040215031 - 2⁹ = 320040214519 is a prime.

It is a super-2 number, since 2×320040215031² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 320040214989 and 320040215007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320040215039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95761410 + ... + 95764751.

It is an arithmetic number, because the mean of its divisors is an integer number (53435799198).

Almost surely, 2^320040215031 is an apocalyptic number.

320040215031 is a deficient number, since it is larger than the sum of its proper divisors (107446178553).

320040215031 is a wasteful number, since it uses less digits than its factorization.

320040215031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191526721.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 320040215031 its reverse (130512040023), we get a palindrome (450552255054).

The spelling of 320040215031 in words is "three hundred twenty billion, forty million, two hundred fifteen thousand, thirty-one".