31448801655 has 12 divisors (see below), whose sum is σ = 54511256280. Its totient is φ = 16772694192.

The previous prime is 31448801611. The next prime is 31448801677. The reversal of 31448801655 is 55610884413.

31448801655 is a `hidden beast` number, since 3 + 1 + 4 + 488 + 0 + 165 + 5 = 666.

It is not a de Polignac number, because 31448801655 - 2¹¹ = 31448799607 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 698862259 = 31448801655 / (3 + 1 + 4 + 4 + 8 + 8 + 0 + 1 + 6 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 31448801655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 349431085 + ... + 349431174.

It is an arithmetic number, because the mean of its divisors is an integer number (4542604690).

Almost surely, 2^31448801655 is an apocalyptic number.

31448801655 is a deficient number, since it is larger than the sum of its proper divisors (23062454625).

31448801655 is a wasteful number, since it uses less digits than its factorization.

31448801655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698862270 (or 698862267 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 45.

The spelling of 31448801655 in words is "thirty-one billion, four hundred forty-eight million, eight hundred one thousand, six hundred fifty-five".