1122320431 has 4 divisors (see below), whose sum is σ = 1125861192. Its totient is φ = 1118779672.

The previous prime is 1122320413. The next prime is 1122320447. The reversal of 1122320431 is 1340232211.

It is a happy number.

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 1122320431 - 2¹¹ = 1122318383 is a prime.

It is a super-2 number, since 2×1122320431² = 2519206299680051522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1122320399 and 1122320408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122323431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1769905 + ... + 1770538.

It is an arithmetic number, because the mean of its divisors is an integer number (281465298).

Almost surely, 2^1122320431 is an apocalyptic number.

1122320431 is a deficient number, since it is larger than the sum of its proper divisors (3540761).

1122320431 is an equidigital number, since it uses as much as digits as its factorization.

1122320431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3540760.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1122320431 is about 33501.0511924626. The cubic root of 1122320431 is about 1039.2155175651.

Adding to 1122320431 its reverse (1340232211), we get a palindrome (2462552642).

It can be divided in two parts, 1122320 and 431, that added together give a triangular number (1122751 = T₁₄₉₈).

The spelling of 1122320431 in words is "one billion, one hundred twenty-two million, three hundred twenty thousand, four hundred thirty-one".