31422521882 has 4 divisors (see below), whose sum is σ = 47133782826. Its totient is φ = 15711260940.

The previous prime is 31422521861. The next prime is 31422521891. The reversal of 31422521882 is 28812522413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28812522413 = 61 ⋅472336433.

It can be written as a sum of positive squares in only one way, i.e., 19990849321 + 11431672561 = 141389^2 + 106919^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7855630469 + ... + 7855630472.

Almost surely, 2^31422521882 is an apocalyptic number.

31422521882 is a deficient number, since it is larger than the sum of its proper divisors (15711260944).

31422521882 is a wasteful number, since it uses less digits than its factorization.

31422521882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15711260943.

The product of its digits is 61440, while the sum is 38.

The spelling of 31422521882 in words is "thirty-one billion, four hundred twenty-two million, five hundred twenty-one thousand, eight hundred eighty-two".