31426521328 has 20 divisors (see below), whose sum is σ = 61020408928. Its totient is φ = 15679319040.

The previous prime is 31426521323. The next prime is 31426521337. The reversal of 31426521328 is 82312562413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31426521323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2113713 + ... + 2128528.

Almost surely, 2^31426521328 is an apocalyptic number.

It is an amenable number.

31426521328 is a deficient number, since it is larger than the sum of its proper divisors (29593887600).

31426521328 is a wasteful number, since it uses less digits than its factorization.

31426521328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4242712 (or 4242706 counting only the distinct ones).

The product of its digits is 69120, while the sum is 37.

The spelling of 31426521328 in words is "thirty-one billion, four hundred twenty-six million, five hundred twenty-one thousand, three hundred twenty-eight".