1400343111 has 24 divisors (see below), whose sum is σ = 2165280000. Its totient is φ = 869430672.

The previous prime is 1400343103. The next prime is 1400343143. The reversal of 1400343111 is 1113430041.

It is not a de Polignac number, because 1400343111 - 2³ = 1400343103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400343101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59311 + ... + 79488.

It is an arithmetic number, because the mean of its divisors is an integer number (90220000).

Almost surely, 2^1400343111 is an apocalyptic number.

1400343111 is a deficient number, since it is larger than the sum of its proper divisors (764936889).

1400343111 is a wasteful number, since it uses less digits than its factorization.

1400343111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138883 (or 138880 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1400343111 is about 37421.1586004496. The cubic root of 1400343111 is about 1118.7803237788.

Adding to 1400343111 its reverse (1113430041), we get a palindrome (2513773152).

The spelling of 1400343111 in words is "one billion, four hundred million, three hundred forty-three thousand, one hundred eleven".