1420443311 has 12 divisors (see below), whose sum is σ = 1665370368. Its totient is φ = 1207930752.

The previous prime is 1420443289. The next prime is 1420443337. The reversal of 1420443311 is 1133440241.

It is not a de Polignac number, because 1420443311 - 2¹⁴ = 1420426927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420443341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107906 + ... + 120351.

It is an arithmetic number, because the mean of its divisors is an integer number (138780864).

Almost surely, 2^1420443311 is an apocalyptic number.

1420443311 is a deficient number, since it is larger than the sum of its proper divisors (244927057).

1420443311 is a wasteful number, since it uses less digits than its factorization.

1420443311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228398 (or 228391 counting only the distinct ones).

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

The square root of 1420443311 is about 37688.7690300440. The cubic root of 1420443311 is about 1124.1078189970.

Adding to 1420443311 its reverse (1133440241), we get a palindrome (2553883552).

The spelling of 1420443311 in words is "one billion, four hundred twenty million, four hundred forty-three thousand, three hundred eleven".