3131020443 has 8 divisors (see below), whose sum is σ = 4231881808. Its totient is φ = 2058753024.

The previous prime is 3131020381. The next prime is 3131020457. The reversal of 3131020443 is 3440201313.

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

It is not a de Polignac number, because 3131020443 - 2¹² = 3131016347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3131020493) 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, 7148230 + ... + 7148667.

It is an arithmetic number, because the mean of its divisors is an integer number (528985226).

Almost surely, 2^3131020443 is an apocalyptic number.

3131020443 is a deficient number, since it is larger than the sum of its proper divisors (1100861365).

3131020443 is a wasteful number, since it uses less digits than its factorization.

3131020443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14296973.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 3131020443 is about 55955.5220063221. The cubic root of 3131020443 is about 1462.9471405377.

Adding to 3131020443 its reverse (3440201313), we get a palindrome (6571221756).

The spelling of 3131020443 in words is "three billion, one hundred thirty-one million, twenty thousand, four hundred forty-three".