88217531 has 2 divisors, whose sum is σ = 88217532. Its totient is φ = 88217530.

The previous prime is 88217473. The next prime is 88217533. The reversal of 88217531 is 13571288.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 88217531 - 2¹⁴ = 88201147 is a prime.

It is a super-2 number, since 2×88217531² = 15564665551471922, which contains 22 as substring.

Together with 88217533, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 88217491 and 88217500.

It is not a weakly prime, because it can be changed into another prime (88217533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44108765 + 44108766.

It is an arithmetic number, because the mean of its divisors is an integer number (44108766).

Almost surely, 2^88217531 is an apocalyptic number.

88217531 is a deficient number, since it is larger than the sum of its proper divisors (1).

88217531 is an equidigital number, since it uses as much as digits as its factorization.

88217531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 35.

The square root of 88217531 is about 9392.4188045466. The cubic root of 88217531 is about 445.1622200307.

The spelling of 88217531 in words is "eighty-eight million, two hundred seventeen thousand, five hundred thirty-one".