1226160431 has 4 divisors (see below), whose sum is σ = 1226585712. Its totient is φ = 1225735152.

The previous prime is 1226160389. The next prime is 1226160433. The reversal of 1226160431 is 1340616221.

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 1226160431 - 2¹⁸ = 1225898287 is a prime.

It is a super-2 number, since 2×1226160431² = 3006938805100211522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1226160431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226160433) 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, 208286 + ... + 214091.

It is an arithmetic number, because the mean of its divisors is an integer number (306646428).

Almost surely, 2^1226160431 is an apocalyptic number.

1226160431 is a deficient number, since it is larger than the sum of its proper divisors (425281).

1226160431 is an equidigital number, since it uses as much as digits as its factorization.

1226160431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425280.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1226160431 is about 35016.5736616249. The cubic root of 1226160431 is about 1070.3252369682.

Adding to 1226160431 its reverse (1340616221), we get a palindrome (2566776652).

The spelling of 1226160431 in words is "one billion, two hundred twenty-six million, one hundred sixty thousand, four hundred thirty-one".