531140929 has 4 divisors (see below), whose sum is σ = 579426480. Its totient is φ = 482855380.

The previous prime is 531140927. The next prime is 531140947. The reversal of 531140929 is 929041135.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 531140929 - 2¹ = 531140927 is a prime.

It is a super-2 number, since 2×531140929² = 564221372917966082, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 531140894 and 531140903.

It is not an unprimeable number, because it can be changed into a prime (531140923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24142759 + ... + 24142780.

It is an arithmetic number, because the mean of its divisors is an integer number (144856620).

Almost surely, 2^531140929 is an apocalyptic number.

It is an amenable number.

531140929 is a deficient number, since it is larger than the sum of its proper divisors (48285551).

531140929 is a wasteful number, since it uses less digits than its factorization.

531140929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48285550.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 531140929 is about 23046.4949395781. The cubic root of 531140929 is about 809.8475194357.

The spelling of 531140929 in words is "five hundred thirty-one million, one hundred forty thousand, nine hundred twenty-nine".