1331402111 has 12 divisors (see below), whose sum is σ = 1443127752. Its totient is φ = 1227766176.

The previous prime is 1331402071. The next prime is 1331402129. The reversal of 1331402111 is 1112041331.

It is not a de Polignac number, because 1331402111 - 2³⁰ = 257660287 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1331402111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331402161) 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, 197285 + ... + 203921.

It is an arithmetic number, because the mean of its divisors is an integer number (120260646).

Almost surely, 2^1331402111 is an apocalyptic number.

1331402111 is a deficient number, since it is larger than the sum of its proper divisors (111725641).

1331402111 is a wasteful number, since it uses less digits than its factorization.

1331402111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7850 (or 7837 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1331402111 is about 36488.3832335718. The cubic root of 1331402111 is about 1100.1107632266.

Adding to 1331402111 its reverse (1112041331), we get a palindrome (2443443442).

The spelling of 1331402111 in words is "one billion, three hundred thirty-one million, four hundred two thousand, one hundred eleven".