113531221323 has 32 divisors (see below), whose sum is σ = 185344839680. Its totient is φ = 68240581920.

The previous prime is 113531221313. The next prime is 113531221333. The reversal of 113531221323 is 323122135311.

113531221323 is a `hidden beast` number, since 1 + 1 + 3 + 5 + 312 + 21 + 323 = 666.

It is an interprime number because it is at equal distance from previous prime (113531221313) and next prime (113531221333).

It is not a de Polignac number, because 113531221323 - 2⁶ = 113531221259 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (113531221313) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3745963 + ... + 3776148.

It is an arithmetic number, because the mean of its divisors is an integer number (5792026240).

Almost surely, 2^113531221323 is an apocalyptic number.

113531221323 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

113531221323 is a deficient number, since it is larger than the sum of its proper divisors (71813618357).

113531221323 is a wasteful number, since it uses less digits than its factorization.

113531221323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7522176 (or 7522170 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

Adding to 113531221323 its reverse (323122135311), we get a palindrome (436653356634).

The spelling of 113531221323 in words is "one hundred thirteen billion, five hundred thirty-one million, two hundred twenty-one thousand, three hundred twenty-three".