31121426254641 has 16 divisors (see below), whose sum is σ = 42621971314944. Its totient is φ = 20191711179024.

The previous prime is 31121426254579. The next prime is 31121426254661. The reversal of 31121426254641 is 14645262412113.

It is not a de Polignac number, because 31121426254641 - 2¹¹ = 31121426252593 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31121426254593 and 31121426254602.

It is not an unprimeable number, because it can be changed into a prime (31121426254661) 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, 932712031 + ... + 932745396.

It is an arithmetic number, because the mean of its divisors is an integer number (2663873207184).

Almost surely, 2^{31121426254641} is an apocalyptic number.

It is an amenable number.

31121426254641 is a deficient number, since it is larger than the sum of its proper divisors (11500545060303).

31121426254641 is a wasteful number, since it uses less digits than its factorization.

31121426254641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1865457580.

The product of its digits is 276480, while the sum is 42.

Adding to 31121426254641 its reverse (14645262412113), we get a palindrome (45766688666754).

The spelling of 31121426254641 in words is "thirty-one trillion, one hundred twenty-one billion, four hundred twenty-six million, two hundred fifty-four thousand, six hundred forty-one".