2131051523 has 4 divisors (see below), whose sum is σ = 2132170920. Its totient is φ = 2129932128.

The previous prime is 2131051493. The next prime is 2131051529. The reversal of 2131051523 is 3251501312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2131051523 - 2⁶ = 2131051459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131051529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 556838 + ... + 560651.

It is an arithmetic number, because the mean of its divisors is an integer number (533042730).

Almost surely, 2^2131051523 is an apocalyptic number.

2131051523 is a deficient number, since it is larger than the sum of its proper divisors (1119397).

2131051523 is a wasteful number, since it uses less digits than its factorization.

2131051523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119396.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 2131051523 is about 46163.3136050696. The cubic root of 2131051523 is about 1286.8600441437.

Adding to 2131051523 its reverse (3251501312), we get a palindrome (5382552835).

The spelling of 2131051523 in words is "two billion, one hundred thirty-one million, fifty-one thousand, five hundred twenty-three".