3123611320631 has 4 divisors (see below), whose sum is σ = 3125393188512. Its totient is φ = 3121829452752.

The previous prime is 3123611320607. The next prime is 3123611320673. The reversal of 3123611320631 is 1360231163213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3123611320631 is a prime.

It is a super-2 number, since 2×3123611320631² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3123611320231) 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 3 ways as a sum of consecutive naturals, for example, 890931311 + ... + 890934816.

It is an arithmetic number, because the mean of its divisors is an integer number (781348297128).

Almost surely, 2^{3123611320631} is an apocalyptic number.

3123611320631 is a deficient number, since it is larger than the sum of its proper divisors (1781867881).

3123611320631 is a wasteful number, since it uses less digits than its factorization.

3123611320631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1781867880.

The product of its (nonzero) digits is 11664, while the sum is 32.

Adding to 3123611320631 its reverse (1360231163213), we get a palindrome (4483842483844).

The spelling of 3123611320631 in words is "three trillion, one hundred twenty-three billion, six hundred eleven million, three hundred twenty thousand, six hundred thirty-one".