1211232347 has 16 divisors (see below), whose sum is σ = 1334067840. Its totient is φ = 1092703872.

The previous prime is 1211232331. The next prime is 1211232353. The reversal of 1211232347 is 7432321121.

It is not a de Polignac number, because 1211232347 - 2⁴ = 1211232331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211232317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 750113 + ... + 751725.

It is an arithmetic number, because the mean of its divisors is an integer number (83379240).

Almost surely, 2^1211232347 is an apocalyptic number.

1211232347 is a deficient number, since it is larger than the sum of its proper divisors (122835493).

1211232347 is a wasteful number, since it uses less digits than its factorization.

1211232347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2902.

The product of its digits is 2016, while the sum is 26.

The square root of 1211232347 is about 34802.7634965961. The cubic root of 1211232347 is about 1065.9638748264.

Adding to 1211232347 its reverse (7432321121), we get a palindrome (8643553468).

The spelling of 1211232347 in words is "one billion, two hundred eleven million, two hundred thirty-two thousand, three hundred forty-seven".