40251343 has 4 divisors (see below), whose sum is σ = 43910568. Its totient is φ = 36592120.

The previous prime is 40251319. The next prime is 40251353. The reversal of 40251343 is 34315204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40251343 - 2¹⁷ = 40120271 is a prime.

It is a super-2 number, since 2×40251343² = 3240341226607298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40251313) 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, 1829596 + ... + 1829617.

It is an arithmetic number, because the mean of its divisors is an integer number (10977642).

Almost surely, 2^40251343 is an apocalyptic number.

40251343 is a deficient number, since it is larger than the sum of its proper divisors (3659225).

40251343 is a wasteful number, since it uses less digits than its factorization.

40251343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3659224.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 40251343 is about 6344.3946125694. The cubic root of 40251343 is about 342.7100116801.

Adding to 40251343 its reverse (34315204), we get a palindrome (74566547).

The spelling of 40251343 in words is "forty million, two hundred fifty-one thousand, three hundred forty-three".