40343253 has 4 divisors (see below), whose sum is σ = 53791008. Its totient is φ = 26895500.

The previous prime is 40343239. The next prime is 40343267. The reversal of 40343253 is 35234304.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (40343239) and next prime (40343267).

It is a cyclic number.

It is not a de Polignac number, because 40343253 - 2¹⁰ = 40342229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40343203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6723873 + ... + 6723878.

It is an arithmetic number, because the mean of its divisors is an integer number (13447752).

Almost surely, 2^40343253 is an apocalyptic number.

It is an amenable number.

40343253 is a deficient number, since it is larger than the sum of its proper divisors (13447755).

40343253 is a wasteful number, since it uses less digits than its factorization.

40343253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13447754.

The product of its (nonzero) digits is 4320, while the sum is 24.

The square root of 40343253 is about 6351.6338842852. The cubic root of 40343253 is about 342.9706616413.

Adding to 40343253 its reverse (35234304), we get a palindrome (75577557).

The spelling of 40343253 in words is "forty million, three hundred forty-three thousand, two hundred fifty-three".