531720134 has 8 divisors (see below), whose sum is σ = 870087528. Its totient is φ = 241690960.

The previous prime is 531720131. The next prime is 531720143. The reversal of 531720134 is 431027135.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531720131) 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, 12084527 + ... + 12084570.

It is an arithmetic number, because the mean of its divisors is an integer number (108760941).

Almost surely, 2^531720134 is an apocalyptic number.

531720134 is a deficient number, since it is larger than the sum of its proper divisors (338367394).

531720134 is a wasteful number, since it uses less digits than its factorization.

531720134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24169110.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 531720134 is about 23059.0575262737. The cubic root of 531720134 is about 810.1417899423.

Adding to 531720134 its reverse (431027135), we get a palindrome (962747269).

The spelling of 531720134 in words is "five hundred thirty-one million, seven hundred twenty thousand, one hundred thirty-four".