531438038 has 4 divisors (see below), whose sum is σ = 797157060. Its totient is φ = 265719018.

The previous prime is 531438031. The next prime is 531438041. The reversal of 531438038 is 830834135.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 531437989 and 531438007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531438031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132859508 + ... + 132859511.

It is an arithmetic number, because the mean of its divisors is an integer number (199289265).

Almost surely, 2^531438038 is an apocalyptic number.

531438038 is a deficient number, since it is larger than the sum of its proper divisors (265719022).

531438038 is a wasteful number, since it uses less digits than its factorization.

531438038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265719021.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 531438038 is about 23052.9398992840. The cubic root of 531438038 is about 809.9984951453.

The spelling of 531438038 in words is "five hundred thirty-one million, four hundred thirty-eight thousand, thirty-eight".