31894522441 has 4 divisors (see below), whose sum is σ = 33281240832. Its totient is φ = 30507804052.

The previous prime is 31894522433. The next prime is 31894522459. The reversal of 31894522441 is 14422549813.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14422549813 = 7 ⋅2060364259.

It is a cyclic number.

It is not a de Polignac number, because 31894522441 - 2³ = 31894522433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31894522141) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 693359161 + ... + 693359206.

It is an arithmetic number, because the mean of its divisors is an integer number (8320310208).

Almost surely, 2^31894522441 is an apocalyptic number.

It is an amenable number.

31894522441 is a deficient number, since it is larger than the sum of its proper divisors (1386718391).

31894522441 is a wasteful number, since it uses less digits than its factorization.

31894522441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1386718390.

The product of its digits is 276480, while the sum is 43.

The spelling of 31894522441 in words is "thirty-one billion, eight hundred ninety-four million, five hundred twenty-two thousand, four hundred forty-one".