531101005 has 4 divisors (see below), whose sum is σ = 637321212. Its totient is φ = 424880800.

The previous prime is 531100993. The next prime is 531101009. The reversal of 531101005 is 500101135.

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

It can be written as a sum of positive squares in 2 ways, for example, as 87198244 + 443902761 = 9338^2 + 21069^2 .

It is not a de Polignac number, because 531101005 - 2⁷ = 531100877 is a prime.

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 531101005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531101009) 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, 53110096 + ... + 53110105.

It is an arithmetic number, because the mean of its divisors is an integer number (159330303).

Almost surely, 2^531101005 is an apocalyptic number.

It is an amenable number.

531101005 is a deficient number, since it is larger than the sum of its proper divisors (106220207).

531101005 is a wasteful number, since it uses less digits than its factorization.

531101005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106220206.

The product of its (nonzero) digits is 75, while the sum is 16.

The square root of 531101005 is about 23045.6287612206. The cubic root of 531101005 is about 809.8272277951.

The spelling of 531101005 in words is "five hundred thirty-one million, one hundred one thousand, five".