3131122203231 has 8 divisors (see below), whose sum is σ = 4554359568384. Its totient is φ = 1897649820120.

The previous prime is 3131122203193. The next prime is 3131122203247. The reversal of 3131122203231 is 1323022211313.

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

It is not a de Polignac number, because 3131122203231 - 2¹³ = 3131122195039 is a prime.

It is a super-2 number, since 2×3131122203231² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131122202231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47441245471 + ... + 47441245536.

It is an arithmetic number, because the mean of its divisors is an integer number (569294946048).

Almost surely, 2^{3131122203231} is an apocalyptic number.

3131122203231 is a deficient number, since it is larger than the sum of its proper divisors (1423237365153).

3131122203231 is a wasteful number, since it uses less digits than its factorization.

3131122203231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94882491021.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 3131122203231 its reverse (1323022211313), we get a palindrome (4454144414544).

The spelling of 3131122203231 in words is "three trillion, one hundred thirty-one billion, one hundred twenty-two million, two hundred three thousand, two hundred thirty-one".