88318537531 has 4 divisors (see below), whose sum is σ = 100935471472. Its totient is φ = 75701603592.

The previous prime is 88318537459. The next prime is 88318537561. The reversal of 88318537531 is 13573581388.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 88318537531 - 2²¹ = 88316440379 is a prime.

It is a super-2 number, since 2×88318537531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88318537561) 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 in 3 ways as a sum of consecutive naturals, for example, 6308466960 + ... + 6308466973.

It is an arithmetic number, because the mean of its divisors is an integer number (25233867868).

Almost surely, 2^88318537531 is an apocalyptic number.

88318537531 is a deficient number, since it is larger than the sum of its proper divisors (12616933941).

88318537531 is a wasteful number, since it uses less digits than its factorization.

88318537531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12616933940.

The product of its digits is 2419200, while the sum is 52.

The spelling of 88318537531 in words is "eighty-eight billion, three hundred eighteen million, five hundred thirty-seven thousand, five hundred thirty-one".