531863970 has 48 divisors (see below), whose sum is σ = 1403075520. Its totient is φ = 128935840.

The previous prime is 531863939. The next prime is 531863971. The reversal of 531863970 is 79368135.

It is not an unprimeable number, because it can be changed into a prime (531863971) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 69630 + ... + 76889.

It is an arithmetic number, because the mean of its divisors is an integer number (29230740).

Almost surely, 2^531863970 is an apocalyptic number.

531863970 is an abundant number, since it is smaller than the sum of its proper divisors (871211550).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

531863970 is a wasteful number, since it uses less digits than its factorization.

531863970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146551 (or 146540 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 531863970 is about 23062.1761765884. The cubic root of 531863970 is about 810.2148340378.

The spelling of 531863970 in words is "five hundred thirty-one million, eight hundred sixty-three thousand, nine hundred seventy".