1223151434 has 4 divisors (see below), whose sum is σ = 1834727154. Its totient is φ = 611575716.

The previous prime is 1223151421. The next prime is 1223151463. The reversal of 1223151434 is 4341513221.

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: 4341513221 = 8669 ⋅500809.

It can be written as a sum of positive squares in only one way, i.e., 981255625 + 241895809 = 31325^2 + 15553^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305787857 + ... + 305787860.

Almost surely, 2^1223151434 is an apocalyptic number.

1223151434 is a deficient number, since it is larger than the sum of its proper divisors (611575720).

1223151434 is an equidigital number, since it uses as much as digits as its factorization.

1223151434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611575719.

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

The square root of 1223151434 is about 34973.5819440903. The cubic root of 1223151434 is about 1069.4489939694.

Adding to 1223151434 its reverse (4341513221), we get a palindrome (5564664655).

The spelling of 1223151434 in words is "one billion, two hundred twenty-three million, one hundred fifty-one thousand, four hundred thirty-four".