531309074 has 4 divisors (see below), whose sum is σ = 796963614. Its totient is φ = 265654536.

The previous prime is 531309073. The next prime is 531309089. The reversal of 531309074 is 470903135.

It is a happy number.

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., 522351025 + 8958049 = 22855^2 + 2993^2 .

It is a super-2 number, since 2×531309074² = 564578664229474952, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 531309074.

It is not an unprimeable number, because it can be changed into a prime (531309073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132827267 + ... + 132827270.

Almost surely, 2^531309074 is an apocalyptic number.

531309074 is a deficient number, since it is larger than the sum of its proper divisors (265654540).

531309074 is a wasteful number, since it uses less digits than its factorization.

531309074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265654539.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 531309074 is about 23050.1426025958. The cubic root of 531309074 is about 809.9329691012.

The spelling of 531309074 in words is "five hundred thirty-one million, three hundred nine thousand, seventy-four".