531213002 has 4 divisors (see below), whose sum is σ = 796819506. Its totient is φ = 265606500.

The previous prime is 531212999. The next prime is 531213041. The reversal of 531213002 is 200312135.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 516243841 + 14969161 = 22721^2 + 3869^2 .

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 as a sum of consecutive naturals, namely, 132803249 + ... + 132803252.

Almost surely, 2^531213002 is an apocalyptic number.

531213002 is a deficient number, since it is larger than the sum of its proper divisors (265606504).

531213002 is a wasteful number, since it uses less digits than its factorization.

531213002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265606503.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 531213002 is about 23048.0585299500. The cubic root of 531213002 is about 809.8841484464.

Adding to 531213002 its reverse (200312135), we get a palindrome (731525137).

The spelling of 531213002 in words is "five hundred thirty-one million, two hundred thirteen thousand, two".