3131324215045 has 16 divisors (see below), whose sum is σ = 4046895063792. Its totient is φ = 2312213529600.

The previous prime is 3131324215009. The next prime is 3131324215049. The reversal of 3131324215045 is 5405124231313.

It can be written as a sum of positive squares in 8 ways, for example, as 327420850849 + 2803903364196 = 572207^2 + 1674486^2 .

It is not a de Polignac number, because 3131324215045 - 2²¹ = 3131322117893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3131324215045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131324215049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 529882 + ... + 2558011.

It is an arithmetic number, because the mean of its divisors is an integer number (252930941487).

Almost surely, 2^{3131324215045} is an apocalyptic number.

It is an amenable number.

3131324215045 is a deficient number, since it is larger than the sum of its proper divisors (915570848747).

3131324215045 is a wasteful number, since it uses less digits than its factorization.

3131324215045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3103512.

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 3131324215045 its reverse (5405124231313), we get a palindrome (8536448446358).

The spelling of 3131324215045 in words is "three trillion, one hundred thirty-one billion, three hundred twenty-four million, two hundred fifteen thousand, forty-five".