1213711474 has 4 divisors (see below), whose sum is σ = 1820567214. Its totient is φ = 606855736.

The previous prime is 1213711453. The next prime is 1213711519. The reversal of 1213711474 is 4741173121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 903423249 + 310288225 = 30057^2 + 17615^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303427867 + ... + 303427870.

Almost surely, 2^1213711474 is an apocalyptic number.

1213711474 is a deficient number, since it is larger than the sum of its proper divisors (606855740).

1213711474 is an equidigital number, since it uses as much as digits as its factorization.

1213711474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606855739.

The product of its digits is 4704, while the sum is 31.

The square root of 1213711474 is about 34838.3621027166. The cubic root of 1213711474 is about 1066.6906439706.

Adding to 1213711474 its reverse (4741173121), we get a palindrome (5954884595).

The spelling of 1213711474 in words is "one billion, two hundred thirteen million, seven hundred eleven thousand, four hundred seventy-four".