320140131 has 16 divisors (see below), whose sum is σ = 441553920. Its totient is φ = 206105760.

The previous prime is 320140127. The next prime is 320140211. The reversal of 320140131 is 131041023.

It is not a de Polignac number, because 320140131 - 2² = 320140127 is a prime.

It is a super-2 number, since 2×320140131² = 204979406953394322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 320140131.

It is not an unprimeable number, because it can be changed into a prime (320140231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43956 + ... + 50718.

It is an arithmetic number, because the mean of its divisors is an integer number (27597120).

Almost surely, 2^320140131 is an apocalyptic number.

320140131 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

320140131 is a deficient number, since it is larger than the sum of its proper divisors (121413789).

320140131 is a wasteful number, since it uses less digits than its factorization.

320140131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7306.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 320140131 is about 17892.4601718154. The cubic root of 320140131 is about 684.0902060334.

Adding to 320140131 its reverse (131041023), we get a palindrome (451181154).

The spelling of 320140131 in words is "three hundred twenty million, one hundred forty thousand, one hundred thirty-one".