1531133530 has 16 divisors (see below), whose sum is σ = 2757784320. Its totient is φ = 612065872.

The previous prime is 1531133521. The next prime is 1531133533. The reversal of 1531133530 is 353311351.

It is a junction number, because it is equal to n+sod(n) for n = 1531133495 and 1531133504.

It is not an unprimeable number, because it can be changed into a prime (1531133533) 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 7 ways as a sum of consecutive naturals, for example, 31570 + ... + 63709.

It is an arithmetic number, because the mean of its divisors is an integer number (172361520).

Almost surely, 2^1531133530 is an apocalyptic number.

1531133530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1531133530 is a deficient number, since it is larger than the sum of its proper divisors (1226650790).

1531133530 is a wasteful number, since it uses less digits than its factorization.

1531133530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96893.

The product of its (nonzero) digits is 2025, while the sum is 25.

The square root of 1531133530 is about 39129.7013788759. The cubic root of 1531133530 is about 1152.5798490075.

Adding to 1531133530 its reverse (353311351), we get a palindrome (1884444881).

It can be divided in two parts, 15311 and 33530, that added together give a square (48841 = 221²).

The spelling of 1531133530 in words is "one billion, five hundred thirty-one million, one hundred thirty-three thousand, five hundred thirty".