1340634623 has 8 divisors (see below), whose sum is σ = 1412359920. Its totient is φ = 1269025920.

The previous prime is 1340634619. The next prime is 1340634643. The reversal of 1340634623 is 3264360431.

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 1340634623 - 2² = 1340634619 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 1340634623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340634613) 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, 5018 + ... + 52023.

It is an arithmetic number, because the mean of its divisors is an integer number (176544990).

Almost surely, 2^1340634623 is an apocalyptic number.

1340634623 is a deficient number, since it is larger than the sum of its proper divisors (71725297).

1340634623 is a wasteful number, since it uses less digits than its factorization.

1340634623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58297.

The product of its (nonzero) digits is 31104, while the sum is 32.

The square root of 1340634623 is about 36614.6776989775. The cubic root of 1340634623 is about 1102.6477875665.

The spelling of 1340634623 in words is "one billion, three hundred forty million, six hundred thirty-four thousand, six hundred twenty-three".