2131440031 has 8 divisors (see below), whose sum is σ = 2436393600. Its totient is φ = 1826602008.

The previous prime is 2131440029. The next prime is 2131440041. The reversal of 2131440031 is 1300441312.

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

It is not a de Polignac number, because 2131440031 - 2¹ = 2131440029 is a prime.

It is a super-2 number, since 2×2131440031² = 9086073211498561922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2131439990 and 2131440008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131440041) 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, 15120 + ... + 67018.

It is an arithmetic number, because the mean of its divisors is an integer number (304549200).

Almost surely, 2^2131440031 is an apocalyptic number.

2131440031 is a deficient number, since it is larger than the sum of its proper divisors (304953569).

2131440031 is an equidigital number, since it uses as much as digits as its factorization.

2131440031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57773.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2131440031 is about 46167.5213867931. The cubic root of 2131440031 is about 1286.9382410710.

Adding to 2131440031 its reverse (1300441312), we get a palindrome (3431881343).

The spelling of 2131440031 in words is "two billion, one hundred thirty-one million, four hundred forty thousand, thirty-one".