113421344340431 has 4 divisors (see below), whose sum is σ = 114544327947864. Its totient is φ = 112298360733000.

The previous prime is 113421344340371. The next prime is 113421344340463. The reversal of 113421344340431 is 134043443124311.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113421344340431 is a prime.

It is a super-2 number, since 2×113421344340431² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113421344340331) 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, 561491803565 + ... + 561491803766.

It is an arithmetic number, because the mean of its divisors is an integer number (28636081986966).

Almost surely, 2^{113421344340431} is an apocalyptic number.

113421344340431 is a deficient number, since it is larger than the sum of its proper divisors (1122983607433).

113421344340431 is a wasteful number, since it uses less digits than its factorization.

113421344340431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122983607432.

The product of its (nonzero) digits is 165888, while the sum is 38.

Adding to 113421344340431 its reverse (134043443124311), we get a palindrome (247464787464742).

The spelling of 113421344340431 in words is "one hundred thirteen trillion, four hundred twenty-one billion, three hundred forty-four million, three hundred forty thousand, four hundred thirty-one".