1340632263 has 16 divisors (see below), whose sum is σ = 1806963840. Its totient is φ = 884079456.

The previous prime is 1340632253. The next prime is 1340632289. The reversal of 1340632263 is 3622360431.

It is not a de Polignac number, because 1340632263 - 2²⁴ = 1323855047 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1340632263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340632253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100648 + ... + 113186.

It is an arithmetic number, because the mean of its divisors is an integer number (112935240).

Almost surely, 2^1340632263 is an apocalyptic number.

1340632263 is a deficient number, since it is larger than the sum of its proper divisors (466331577).

1340632263 is a wasteful number, since it uses less digits than its factorization.

1340632263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12926.

The product of its (nonzero) digits is 15552, while the sum is 30.

The square root of 1340632263 is about 36614.6454714504. The cubic root of 1340632263 is about 1102.6471405469.

Adding to 1340632263 its reverse (3622360431), we get a palindrome (4962992694).

The spelling of 1340632263 in words is "one billion, three hundred forty million, six hundred thirty-two thousand, two hundred sixty-three".