1211243432 has 16 divisors (see below), whose sum is σ = 2595521760. Its totient is φ = 519104304.

The previous prime is 1211243413. The next prime is 1211243459. The reversal of 1211243432 is 2343421121.

It is a super-2 number, since 2×1211243432² = 2934221303126277248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1211243398 and 1211243407.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10814618 + ... + 10814729.

It is an arithmetic number, because the mean of its divisors is an integer number (162220110).

Almost surely, 2^1211243432 is an apocalyptic number.

It is an amenable number.

1211243432 is an abundant number, since it is smaller than the sum of its proper divisors (1384278328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211243432 is a wasteful number, since it uses less digits than its factorization.

1211243432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21629360 (or 21629356 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 1211243432 is about 34802.9227508265. The cubic root of 1211243432 is about 1065.9671266587.

Adding to 1211243432 its reverse (2343421121), we get a palindrome (3554664553).

The spelling of 1211243432 in words is "one billion, two hundred eleven million, two hundred forty-three thousand, four hundred thirty-two".