113403121431 has 16 divisors (see below), whose sum is σ = 161626510080. Its totient is φ = 70551250880.

The previous prime is 113403121393. The next prime is 113403121439. The reversal of 113403121431 is 134121304311.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 113403121431 - 2⁷ = 113403121303 is a prime.

It is a super-2 number, since 2×113403121431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113403121439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20040141 + ... + 20045798.

It is an arithmetic number, because the mean of its divisors is an integer number (10101656880).

Almost surely, 2^113403121431 is an apocalyptic number.

113403121431 is a deficient number, since it is larger than the sum of its proper divisors (48223388649).

113403121431 is a wasteful number, since it uses less digits than its factorization.

113403121431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40086006.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 113403121431 its reverse (134121304311), we get a palindrome (247524425742).

The spelling of 113403121431 in words is "one hundred thirteen billion, four hundred three million, one hundred twenty-one thousand, four hundred thirty-one".