1223154413 has 4 divisors (see below), whose sum is σ = 1317243228. Its totient is φ = 1129065600.

The previous prime is 1223154409. The next prime is 1223154433. The reversal of 1223154413 is 3144513221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3144513221 = 173 ⋅18176377.

It can be written as a sum of positive squares in 2 ways, for example, as 202863049 + 1020291364 = 14243^2 + 31942^2 .

It is not a de Polignac number, because 1223154413 - 2² = 1223154409 is a prime.

It is a super-2 number, since 2×1223154413² = 2992213436082749138, which 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 (1223154433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47044388 + ... + 47044413.

It is an arithmetic number, because the mean of its divisors is an integer number (329310807).

Almost surely, 2^1223154413 is an apocalyptic number.

1223154413 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1223154413 is a deficient number, since it is larger than the sum of its proper divisors (94088815).

1223154413 is an equidigital number, since it uses as much as digits as its factorization.

1223154413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94088814.

The product of its digits is 2880, while the sum is 26.

The square root of 1223154413 is about 34973.6245333537. The cubic root of 1223154413 is about 1069.4498621873.

Adding to 1223154413 its reverse (3144513221), we get a palindrome (4367667634).

The spelling of 1223154413 in words is "one billion, two hundred twenty-three million, one hundred fifty-four thousand, four hundred thirteen".