531381103 has 4 divisors (see below), whose sum is σ = 579688488. Its totient is φ = 483073720.

The previous prime is 531381083. The next prime is 531381157. The reversal of 531381103 is 301183135.

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 531381103 - 2¹³ = 531372911 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 (531381203) 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, 24153676 + ... + 24153697.

It is an arithmetic number, because the mean of its divisors is an integer number (144922122).

Almost surely, 2^531381103 is an apocalyptic number.

531381103 is a deficient number, since it is larger than the sum of its proper divisors (48307385).

531381103 is a wasteful number, since it uses less digits than its factorization.

531381103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48307384.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 531381103 is about 23051.7049911715. The cubic root of 531381103 is about 809.9695680280.

The spelling of 531381103 in words is "five hundred thirty-one million, three hundred eighty-one thousand, one hundred three".