531214145 has 48 divisors (see below), whose sum is σ = 812592000. Its totient is φ = 329656320.

The previous prime is 531214139. The next prime is 531214207. The reversal of 531214145 is 541412135.

It is not a de Polignac number, because 531214145 - 2⁸ = 531213889 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1182881 + ... + 1183329.

It is an arithmetic number, because the mean of its divisors is an integer number (16929000).

Almost surely, 2^531214145 is an apocalyptic number.

531214145 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

531214145 is a deficient number, since it is larger than the sum of its proper divisors (281377855).

531214145 is a wasteful number, since it uses less digits than its factorization.

531214145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918 (or 911 counting only the distinct ones).

The product of its digits is 2400, while the sum is 26.

The square root of 531214145 is about 23048.0833259514. The cubic root of 531214145 is about 809.8847293163.

The spelling of 531214145 in words is "five hundred thirty-one million, two hundred fourteen thousand, one hundred forty-five".