1340270253 has 16 divisors (see below), whose sum is σ = 2269240960. Its totient is φ = 765868608.

The previous prime is 1340270251. The next prime is 1340270297. The reversal of 1340270253 is 3520720431.

1340270253 is a `hidden beast` number, since 1 + 3 + 402 + 7 + 0 + 253 = 666.

It is not a de Polignac number, because 1340270253 - 2¹ = 1340270251 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340270251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3545500 + ... + 3545877.

It is an arithmetic number, because the mean of its divisors is an integer number (141827560).

Almost surely, 2^1340270253 is an apocalyptic number.

It is an amenable number.

1340270253 is a deficient number, since it is larger than the sum of its proper divisors (928970707).

1340270253 is an equidigital number, since it uses as much as digits as its factorization.

1340270253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7091393 (or 7091387 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 1340270253 is about 36609.7016240231. The cubic root of 1340270253 is about 1102.5478825981.

Adding to 1340270253 its reverse (3520720431), we get a palindrome (4860990684).

The spelling of 1340270253 in words is "one billion, three hundred forty million, two hundred seventy thousand, two hundred fifty-three".