531383938 has 16 divisors (see below), whose sum is σ = 823109760. Its totient is φ = 257127696.

The previous prime is 531383933. The next prime is 531383939. The reversal of 531383938 is 839383135.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a junction number, because it is equal to n+sod(n) for n = 531383894 and 531383903.

It is not an unprimeable number, because it can be changed into a prime (531383933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18970 + ... + 37717.

It is an arithmetic number, because the mean of its divisors is an integer number (51444360).

Almost surely, 2^531383938 is an apocalyptic number.

531383938 is a deficient number, since it is larger than the sum of its proper divisors (291725822).

531383938 is a wasteful number, since it uses less digits than its factorization.

531383938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56841.

The product of its digits is 233280, while the sum is 43.

The square root of 531383938 is about 23051.7664832871. The cubic root of 531383938 is about 809.9710084629.

The spelling of 531383938 in words is "five hundred thirty-one million, three hundred eighty-three thousand, nine hundred thirty-eight".