105931485826531 has 4 divisors (see below), whose sum is σ = 105931566879064. Its totient is φ = 105931404774000.

The previous prime is 105931485826519. The next prime is 105931485826553. The reversal of 105931485826531 is 135628584139501.

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

It is a 4-Lehmer number, since φ(105931485826531) divides (105931485826531-1)⁴.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105931485826531 is a prime.

It is a super-2 number, since 2×105931485826531² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 105931485826531.

It is not an unprimeable number, because it can be changed into a prime (105931485826561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38533170 + ... + 41190631.

It is an arithmetic number, because the mean of its divisors is an integer number (26482891719766).

It is a Poulet number, since it divides 2^{105931485826530}-1.

Almost surely, 2^{105931485826531} is an apocalyptic number.

105931485826531 is the 4602858-th centered decagonal number.

105931485826531 is a deficient number, since it is larger than the sum of its proper divisors (81052533).

105931485826531 is an equidigital number, since it uses as much as digits as its factorization.

105931485826531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81052532.

The product of its (nonzero) digits is 31104000, while the sum is 61.

The spelling of 105931485826531 in words is "one hundred five trillion, nine hundred thirty-one billion, four hundred eighty-five million, eight hundred twenty-six thousand, five hundred thirty-one".