531101140 has 12 divisors (see below), whose sum is σ = 1115312436. Its totient is φ = 212440448.

The previous prime is 531101111. The next prime is 531101149. The reversal of 531101140 is 41101135.

It can be written as a sum of positive squares in 2 ways, for example, as 149523984 + 381577156 = 12228^2 + 19534^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531101149) 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, 13277509 + ... + 13277548.

It is an arithmetic number, because the mean of its divisors is an integer number (92942703).

Almost surely, 2^531101140 is an apocalyptic number.

It is an amenable number.

531101140 is an abundant number, since it is smaller than the sum of its proper divisors (584211296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

531101140 is a wasteful number, since it uses less digits than its factorization.

531101140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26555066 (or 26555064 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 531101140 is about 23045.6316901924. The cubic root of 531101140 is about 809.8272964115.

Adding to 531101140 its reverse (41101135), we get a palindrome (572202275).

The spelling of 531101140 in words is "five hundred thirty-one million, one hundred one thousand, one hundred forty".