20131524460 has 24 divisors (see below), whose sum is σ = 42440711040. Its totient is φ = 8021274624.

The previous prime is 20131524449. The next prime is 20131524463. The reversal of 20131524460 is 6442513102.

It is not an unprimeable number, because it can be changed into a prime (20131524463) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1953180 + ... + 1963459.

It is an arithmetic number, because the mean of its divisors is an integer number (1768362960).

Almost surely, 2^20131524460 is an apocalyptic number.

20131524460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20131524460 is an abundant number, since it is smaller than the sum of its proper divisors (22309186580).

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

20131524460 is a wasteful number, since it uses less digits than its factorization.

20131524460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3916905 (or 3916903 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The spelling of 20131524460 in words is "twenty billion, one hundred thirty-one million, five hundred twenty-four thousand, four hundred sixty".