2131021453 has 16 divisors (see below), whose sum is σ = 2384303040. Its totient is φ = 1887779200.

The previous prime is 2131021411. The next prime is 2131021463. The reversal of 2131021453 is 3541201312.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2131021453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131021463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 457251 + ... + 461887.

It is an arithmetic number, because the mean of its divisors is an integer number (149018940).

Almost surely, 2^2131021453 is an apocalyptic number.

It is an amenable number.

2131021453 is a deficient number, since it is larger than the sum of its proper divisors (253281587).

2131021453 is a wasteful number, since it uses less digits than its factorization.

2131021453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5708.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 2131021453 is about 46162.9879123958. The cubic root of 2131021453 is about 1286.8539914098.

Adding to 2131021453 its reverse (3541201312), we get a palindrome (5672222765).

The spelling of 2131021453 in words is "two billion, one hundred thirty-one million, twenty-one thousand, four hundred fifty-three".