3131443444 has 24 divisors (see below), whose sum is σ = 5516501760. Its totient is φ = 1555325856.

The previous prime is 3131443433. The next prime is 3131443477. The reversal of 3131443444 is 4443441313.

It is a happy number.

It is a super-2 number, since 2×3131443444² = 19611876085941162272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 563809 + ... + 569335.

It is an arithmetic number, because the mean of its divisors is an integer number (229854240).

Almost surely, 2^3131443444 is an apocalyptic number.

It is an amenable number.

3131443444 is a deficient number, since it is larger than the sum of its proper divisors (2385058316).

3131443444 is a wasteful number, since it uses less digits than its factorization.

3131443444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6447 (or 6445 counting only the distinct ones).

The product of its digits is 27648, while the sum is 31.

The square root of 3131443444 is about 55959.3016754141. The cubic root of 3131443444 is about 1463.0130189788.

Adding to 3131443444 its reverse (4443441313), we get a palindrome (7574884757).

The spelling of 3131443444 in words is "three billion, one hundred thirty-one million, four hundred forty-three thousand, four hundred forty-four".