31448067840 has 216 divisors, whose sum is σ = 124351220448. Its totient is φ = 7188111360.

The previous prime is 31448067839. The next prime is 31448067881. The reversal of 31448067840 is 4876084413.

31448067840 is a `hidden beast` number, since 31 + 4 + 480 + 67 + 84 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

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 in 23 ways as a sum of consecutive naturals, for example, 114351 + ... + 275630.

Almost surely, 2^31448067840 is an apocalyptic number.

31448067840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31448067840 is an abundant number, since it is smaller than the sum of its proper divisors (92903152608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31448067840 is a wasteful number, since it uses less digits than its factorization.

31448067840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390015 (or 389998 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The spelling of 31448067840 in words is "thirty-one billion, four hundred forty-eight million, sixty-seven thousand, eight hundred forty".