87328531133 has 2 divisors, whose sum is σ = 87328531134. Its totient is φ = 87328531132.

The previous prime is 87328531109. The next prime is 87328531189. The reversal of 87328531133 is 33113582378.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75549119044 + 11779412089 = 274862^2 + 108533^2 .

It is a cyclic number.

It is not a de Polignac number, because 87328531133 - 2¹⁶ = 87328465597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87328531193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43664265566 + 43664265567.

It is an arithmetic number, because the mean of its divisors is an integer number (43664265567).

Almost surely, 2^87328531133 is an apocalyptic number.

It is an amenable number.

87328531133 is a deficient number, since it is larger than the sum of its proper divisors (1).

87328531133 is an equidigital number, since it uses as much as digits as its factorization.

87328531133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 44.

The spelling of 87328531133 in words is "eighty-seven billion, three hundred twenty-eight million, five hundred thirty-one thousand, one hundred thirty-three".