3131223541 has 16 divisors (see below), whose sum is σ = 3405427200. Its totient is φ = 2868134400.

The previous prime is 3131223533. The next prime is 3131223547. The reversal of 3131223541 is 1453221313.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 3131223541 - 2³ = 3131223533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131223547) 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 15 ways as a sum of consecutive naturals, for example, 1012125 + ... + 1015213.

It is an arithmetic number, because the mean of its divisors is an integer number (212839200).

Almost surely, 2^3131223541 is an apocalyptic number.

3131223541 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3131223541 is a deficient number, since it is larger than the sum of its proper divisors (274203659).

3131223541 is a wasteful number, since it uses less digits than its factorization.

3131223541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4860.

The product of its digits is 2160, while the sum is 25.

The square root of 3131223541 is about 55957.3367933107. The cubic root of 3131223541 is about 1462.9787718881.

Adding to 3131223541 its reverse (1453221313), we get a palindrome (4584444854).

The spelling of 3131223541 in words is "three billion, one hundred thirty-one million, two hundred twenty-three thousand, five hundred forty-one".