113221311213431 has 4 divisors (see below), whose sum is σ = 113249109231552. Its totient is φ = 113193513195312.

The previous prime is 113221311213427. The next prime is 113221311213433. The reversal of 113221311213431 is 134312113122311.

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

It is a cyclic number.

It is not a de Polignac number, because 113221311213431 - 2² = 113221311213427 is a prime.

It is a super-2 number, since 2×113221311213431² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113221311213394 and 113221311213403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113221311213433) 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, 13899002951 + ... + 13899011096.

It is an arithmetic number, because the mean of its divisors is an integer number (28312277307888).

Almost surely, 2^{113221311213431} is an apocalyptic number.

113221311213431 is a deficient number, since it is larger than the sum of its proper divisors (27798018121).

113221311213431 is an equidigital number, since it uses as much as digits as its factorization.

113221311213431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27798018120.

The product of its digits is 2592, while the sum is 29.

Adding to 113221311213431 its reverse (134312113122311), we get a palindrome (247533424335742).

The spelling of 113221311213431 in words is "one hundred thirteen trillion, two hundred twenty-one billion, three hundred eleven million, two hundred thirteen thousand, four hundred thirty-one".