531201388 has 6 divisors (see below), whose sum is σ = 929602436. Its totient is φ = 265600692.

The previous prime is 531201331. The next prime is 531201389. The reversal of 531201388 is 883102135.

It is a super-2 number, since 2×531201388² = 564349829226253088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (531201389) 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 as a sum of consecutive naturals, namely, 66400170 + ... + 66400177.

Almost surely, 2^531201388 is an apocalyptic number.

It is an amenable number.

531201388 is a deficient number, since it is larger than the sum of its proper divisors (398401048).

531201388 is a wasteful number, since it uses less digits than its factorization.

531201388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132800351 (or 132800349 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 531201388 is about 23047.8065767656. The cubic root of 531201388 is about 809.8782461919.

The spelling of 531201388 in words is "five hundred thirty-one million, two hundred one thousand, three hundred eighty-eight".