3131120342215 has 16 divisors (see below), whose sum is σ = 3960890236800. Its totient is φ = 2369585113632.

The previous prime is 3131120342123. The next prime is 3131120342221. The reversal of 3131120342215 is 5122430211313.

It is a cyclic number.

It is not a de Polignac number, because 3131120342215 - 2⁹ = 3131120341703 is a prime.

It is a super-2 number, since 2×3131120342215² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 24063345 + ... + 24193114.

It is an arithmetic number, because the mean of its divisors is an integer number (247555639800).

Almost surely, 2^{3131120342215} is an apocalyptic number.

3131120342215 is a deficient number, since it is larger than the sum of its proper divisors (829769894585).

3131120342215 is a wasteful number, since it uses less digits than its factorization.

3131120342215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48257166.

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 3131120342215 its reverse (5122430211313), we get a palindrome (8253550553528).

The spelling of 3131120342215 in words is "three trillion, one hundred thirty-one billion, one hundred twenty million, three hundred forty-two thousand, two hundred fifteen".