1340211403 has 8 divisors (see below), whose sum is σ = 1432591776. Its totient is φ = 1250673600.

The previous prime is 1340211391. The next prime is 1340211421. The reversal of 1340211403 is 3041120431.

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 1340211403 - 2¹⁷ = 1340080331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340211463) 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, 709668 + ... + 711553.

It is an arithmetic number, because the mean of its divisors is an integer number (179073972).

Almost surely, 2^1340211403 is an apocalyptic number.

1340211403 is a deficient number, since it is larger than the sum of its proper divisors (92380373).

1340211403 is a wasteful number, since it uses less digits than its factorization.

1340211403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1421285.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1340211403 is about 36608.8978665023. The cubic root of 1340211403 is about 1102.5317450834.

Adding to 1340211403 its reverse (3041120431), we get a palindrome (4381331834).

It can be divided in two parts, 134021 and 1403, that added together give a square (135424 = 368²).

The spelling of 1340211403 in words is "one billion, three hundred forty million, two hundred eleven thousand, four hundred three".