531279345 has 32 divisors (see below), whose sum is σ = 865912320. Its totient is φ = 278104320.

The previous prime is 531279341. The next prime is 531279373. The reversal of 531279345 is 543972135.

It is a happy number.

It is not a de Polignac number, because 531279345 - 2² = 531279341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (531279341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 213247 + ... + 215723.

It is an arithmetic number, because the mean of its divisors is an integer number (27059760).

Almost surely, 2^531279345 is an apocalyptic number.

It is an amenable number.

531279345 is a deficient number, since it is larger than the sum of its proper divisors (334632975).

531279345 is a wasteful number, since it uses less digits than its factorization.

531279345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2745.

The product of its digits is 113400, while the sum is 39.

The square root of 531279345 is about 23049.4977168701. The cubic root of 531279345 is about 809.9178624226.

The spelling of 531279345 in words is "five hundred thirty-one million, two hundred seventy-nine thousand, three hundred forty-five".