1531000540524 has 72 divisors (see below), whose sum is σ = 4420877341440. Its totient is φ = 403780358592.

The previous prime is 1531000540513. The next prime is 1531000540543. The reversal of 1531000540524 is 4250450001351.

It is a junction number, because it is equal to n+sod(n) for n = 1531000540491 and 1531000540500.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53909464 + ... + 53937855.

Almost surely, 2^{1531000540524} is an apocalyptic number.

1531000540524 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1531000540524 is an abundant number, since it is smaller than the sum of its proper divisors (2889876800916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1531000540524 is a wasteful number, since it uses less digits than its factorization.

1531000540524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107847359 (or 107847344 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 1531000540524 its reverse (4250450001351), we get a palindrome (5781450541875).

The spelling of 1531000540524 in words is "one trillion, five hundred thirty-one billion, five hundred forty thousand, five hundred twenty-four".