2131501536 has 36 divisors (see below), whose sum is σ = 6061458312. Its totient is φ = 710500416.

The previous prime is 2131501507. The next prime is 2131501553. The reversal of 2131501536 is 6351051312.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3700236 + ... + 3700811.

It is an arithmetic number, because the mean of its divisors is an integer number (168373842).

Almost surely, 2^2131501536 is an apocalyptic number.

It is an amenable number.

2131501536 is an abundant number, since it is smaller than the sum of its proper divisors (3929956776).

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

2131501536 is a wasteful number, since it uses less digits than its factorization.

2131501536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7401063 (or 7401052 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 2131501536 is about 46168.1874887893. The cubic root of 2131501536 is about 1286.9506196154.

Adding to 2131501536 its reverse (6351051312), we get a palindrome (8482552848).

The spelling of 2131501536 in words is "two billion, one hundred thirty-one million, five hundred one thousand, five hundred thirty-six".