1211441423 has 8 divisors (see below), whose sum is σ = 1214929920. Its totient is φ = 1207959480.

The previous prime is 1211441419. The next prime is 1211441461. The reversal of 1211441423 is 3241441121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1211441423 - 2² = 1211441419 is a prime.

It is a super-3 number, since 3×1211441423³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211440423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 836486 + ... + 837932.

It is an arithmetic number, because the mean of its divisors is an integer number (151866240).

Almost surely, 2^1211441423 is an apocalyptic number.

1211441423 is a deficient number, since it is larger than the sum of its proper divisors (3488497).

1211441423 is an equidigital number, since it uses as much as digits as its factorization.

1211441423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3277.

The product of its digits is 768, while the sum is 23.

The square root of 1211441423 is about 34805.7670939745. The cubic root of 1211441423 is about 1066.0252048268.

Adding to 1211441423 its reverse (3241441121), we get a palindrome (4452882544).

It can be divided in two parts, 1211 and 441423, that multiplied together give a triangular number (534563253 = T₃₂₆₉₇).

The spelling of 1211441423 in words is "one billion, two hundred eleven million, four hundred forty-one thousand, four hundred twenty-three".