83687132531 has 2 divisors, whose sum is σ = 83687132532. Its totient is φ = 83687132530.

The previous prime is 83687132429. The next prime is 83687132549. The reversal of 83687132531 is 13523178638.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83687132531 - 2¹⁴ = 83687116147 is a prime.

It is a super-2 number, since 2×83687132531² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (83687132131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41843566265 + 41843566266.

It is an arithmetic number, because the mean of its divisors is an integer number (41843566266).

Almost surely, 2^83687132531 is an apocalyptic number.

83687132531 is a deficient number, since it is larger than the sum of its proper divisors (1).

83687132531 is an equidigital number, since it uses as much as digits as its factorization.

83687132531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 47.

The spelling of 83687132531 in words is "eighty-three billion, six hundred eighty-seven million, one hundred thirty-two thousand, five hundred thirty-one".