1253430343 has 8 divisors (see below), whose sum is σ = 1382743440. Its totient is φ = 1126678080.

The previous prime is 1253430341. The next prime is 1253430413. The reversal of 1253430343 is 3430343521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1253430343 - 2¹ = 1253430341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253430341) 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, 639180 + ... + 641137.

It is an arithmetic number, because the mean of its divisors is an integer number (172842930).

Almost surely, 2^1253430343 is an apocalyptic number.

1253430343 is a deficient number, since it is larger than the sum of its proper divisors (129313097).

1253430343 is a wasteful number, since it uses less digits than its factorization.

1253430343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280417.

The product of its (nonzero) digits is 12960, while the sum is 28.

The square root of 1253430343 is about 35403.8181980419. The cubic root of 1253430343 is about 1078.2018383189.

Adding to 1253430343 its reverse (3430343521), we get a palindrome (4683773864).

The spelling of 1253430343 in words is "one billion, two hundred fifty-three million, four hundred thirty thousand, three hundred forty-three".