113071502821 has 4 divisors (see below), whose sum is σ = 113072862700. Its totient is φ = 113070142944.

The previous prime is 113071502801. The next prime is 113071502917. The reversal of 113071502821 is 128205170311.

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

It can be written as a sum of positive squares in 2 ways, for example, as 89409372196 + 23662130625 = 299014^2 + 153825^2 .

It is a cyclic number.

It is not a de Polignac number, because 113071502821 - 2¹⁹ = 113070978533 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 (113071502801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 546486 + ... + 724423.

It is an arithmetic number, because the mean of its divisors is an integer number (28268215675).

Almost surely, 2^113071502821 is an apocalyptic number.

It is an amenable number.

113071502821 is a deficient number, since it is larger than the sum of its proper divisors (1359879).

113071502821 is an equidigital number, since it uses as much as digits as its factorization.

113071502821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1359878.

The product of its (nonzero) digits is 3360, while the sum is 31.

The spelling of 113071502821 in words is "one hundred thirteen billion, seventy-one million, five hundred two thousand, eight hundred twenty-one".