31122144441 has 24 divisors (see below), whose sum is σ = 45451692000. Its totient is φ = 20519150976.

The previous prime is 31122144437. The next prime is 31122144461. The reversal of 31122144441 is 14444122113.

31122144441 is a `hidden beast` number, since 3 + 1 + 1 + 2 + 214 + 4 + 441 = 666.

It is not a de Polignac number, because 31122144441 - 2² = 31122144437 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31122144461) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 543810 + ... + 598308.

It is an arithmetic number, because the mean of its divisors is an integer number (1893820500).

Almost surely, 2^31122144441 is an apocalyptic number.

It is an amenable number.

31122144441 is a deficient number, since it is larger than the sum of its proper divisors (14329547559).

31122144441 is a wasteful number, since it uses less digits than its factorization.

31122144441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55205 (or 55202 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

Adding to 31122144441 its reverse (14444122113), we get a palindrome (45566266554).

The spelling of 31122144441 in words is "thirty-one billion, one hundred twenty-two million, one hundred forty-four thousand, four hundred forty-one".