31789232055 has 48 divisors (see below), whose sum is σ = 65305304064. Its totient is φ = 14532216480.

The previous prime is 31789232053. The next prime is 31789232107. The reversal of 31789232055 is 55023298713.

31789232055 is a `hidden beast` number, since 317 + 8 + 9 + 2 + 320 + 5 + 5 = 666.

It is not a de Polignac number, because 31789232055 - 2¹ = 31789232053 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 31789232055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31789232051) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1860351 + ... + 1877360.

It is an arithmetic number, because the mean of its divisors is an integer number (1360527168).

Almost surely, 2^31789232055 is an apocalyptic number.

31789232055 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

31789232055 is an abundant number, since it is smaller than the sum of its proper divisors (33516072009).

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

31789232055 is an equidigital number, since it uses as much as digits as its factorization.

31789232055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3737738 (or 3737726 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 31789232055 in words is "thirty-one billion, seven hundred eighty-nine million, two hundred thirty-two thousand, fifty-five".