1213343254 has 4 divisors (see below), whose sum is σ = 1820014884. Its totient is φ = 606671626.

The previous prime is 1213343239. The next prime is 1213343273. The reversal of 1213343254 is 4523433121.

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: 4523433121 = 1741 ⋅2598181.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303335812 + ... + 303335815.

It is an arithmetic number, because the mean of its divisors is an integer number (455003721).

Almost surely, 2^1213343254 is an apocalyptic number.

1213343254 is a deficient number, since it is larger than the sum of its proper divisors (606671630).

1213343254 is an equidigital number, since it uses as much as digits as its factorization.

1213343254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606671629.

The product of its digits is 8640, while the sum is 28.

The square root of 1213343254 is about 34833.0770102212. The cubic root of 1213343254 is about 1066.5827609564.

Adding to 1213343254 its reverse (4523433121), we get a palindrome (5736776375).

The spelling of 1213343254 in words is "one billion, two hundred thirteen million, three hundred forty-three thousand, two hundred fifty-four".