1211440232 has 16 divisors (see below), whose sum is σ = 2296973700. Its totient is φ = 598913920.

The previous prime is 1211440231. The next prime is 1211440249. The reversal of 1211440232 is 2320441121.

It can be written as a sum of positive squares in 2 ways, for example, as 1055340196 + 156100036 = 32486^2 + 12494^2 .

It is a super-3 number, since 3×1211440232³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1211440231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 850019 + ... + 851442.

Almost surely, 2^1211440232 is an apocalyptic number.

It is an amenable number.

1211440232 is a deficient number, since it is larger than the sum of its proper divisors (1085533468).

1211440232 is a wasteful number, since it uses less digits than its factorization.

1211440232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1701556 (or 1701552 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1211440232 is about 34805.7499847367. The cubic root of 1211440232 is about 1066.0248554808.

Adding to 1211440232 its reverse (2320441121), we get a palindrome (3531881353).

The spelling of 1211440232 in words is "one billion, two hundred eleven million, four hundred forty thousand, two hundred thirty-two".