531230155 has 8 divisors (see below), whose sum is σ = 638554752. Its totient is φ = 424265088.

The previous prime is 531230137. The next prime is 531230171. The reversal of 531230155 is 551032135.

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

It is a cyclic number.

It is not a de Polignac number, because 531230155 - 2⁷ = 531230027 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86619 + ... + 92548.

It is an arithmetic number, because the mean of its divisors is an integer number (79819344).

Almost surely, 2^531230155 is an apocalyptic number.

531230155 is a deficient number, since it is larger than the sum of its proper divisors (107324597).

531230155 is a wasteful number, since it uses less digits than its factorization.

531230155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179765.

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 531230155 is about 23048.4306407183. The cubic root of 531230155 is about 809.8928654728.

The spelling of 531230155 in words is "five hundred thirty-one million, two hundred thirty thousand, one hundred fifty-five".