320140155031 has 8 divisors (see below), whose sum is σ = 321665172480. Its totient is φ = 318616144248.

The previous prime is 320140155011. The next prime is 320140155073. The reversal of 320140155031 is 130551041023.

It is a happy number.

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 320140155031 - 2¹⁹ = 320139630743 is a prime.

It is a super-2 number, since 2×320140155031² (a number of 24 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 = 320140154987 and 320140155005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320140155001) 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, 389770 + ... + 890056.

It is an arithmetic number, because the mean of its divisors is an integer number (40208146560).

Almost surely, 2^320140155031 is an apocalyptic number.

320140155031 is a deficient number, since it is larger than the sum of its proper divisors (1525017449).

320140155031 is a wasteful number, since it uses less digits than its factorization.

320140155031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503333.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 320140155031 its reverse (130551041023), we get a palindrome (450691196054).

The spelling of 320140155031 in words is "three hundred twenty billion, one hundred forty million, one hundred fifty-five thousand, thirty-one".