531020141 has 4 divisors (see below), whose sum is σ = 531076284. Its totient is φ = 530964000.

The previous prime is 531020137. The next prime is 531020179. The reversal of 531020141 is 141020135.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 475458025 + 55562116 = 21805^2 + 7454^2 .

It is a cyclic number.

It is not a de Polignac number, because 531020141 - 2² = 531020137 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531020101) 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, 10010 + ... + 34091.

It is an arithmetic number, because the mean of its divisors is an integer number (132769071).

Almost surely, 2^531020141 is an apocalyptic number.

It is an amenable number.

531020141 is a deficient number, since it is larger than the sum of its proper divisors (56143).

531020141 is a wasteful number, since it uses less digits than its factorization.

531020141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56142.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 531020141 is about 23043.8742619378. The cubic root of 531020141 is about 809.7861250091.

Adding to 531020141 its reverse (141020135), we get a palindrome (672040276).

The spelling of 531020141 in words is "five hundred thirty-one million, twenty thousand, one hundred forty-one".