1530312531 has 24 divisors (see below), whose sum is σ = 2249210880. Its totient is φ = 924799920.

The previous prime is 1530312529. The next prime is 1530312541. The reversal of 1530312531 is 1352130351.

It is not a de Polignac number, because 1530312531 - 2¹ = 1530312529 is a prime.

It is a super-2 number, since 2×1530312531² = 4683712885071251922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1530312541) 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 in 23 ways as a sum of consecutive naturals, for example, 124446 + ... + 136188.

It is an arithmetic number, because the mean of its divisors is an integer number (93717120).

Almost surely, 2^1530312531 is an apocalyptic number.

1530312531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1530312531 is a deficient number, since it is larger than the sum of its proper divisors (718898349).

1530312531 is a wasteful number, since it uses less digits than its factorization.

1530312531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12127 (or 12116 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 24.

The square root of 1530312531 is about 39119.2092328053. The cubic root of 1530312531 is about 1152.3738064328.

Adding to 1530312531 its reverse (1352130351), we get a palindrome (2882442882).

The spelling of 1530312531 in words is "one billion, five hundred thirty million, three hundred twelve thousand, five hundred thirty-one".