631353343 has 4 divisors (see below), whose sum is σ = 634063248. Its totient is φ = 628643440.

The previous prime is 631353319. The next prime is 631353377. The reversal of 631353343 is 343353136.

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 631353343 - 2⁹ = 631352831 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 (631353313) 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, 1354603 + ... + 1355068.

It is an arithmetic number, because the mean of its divisors is an integer number (158515812).

Almost surely, 2^631353343 is an apocalyptic number.

631353343 is a deficient number, since it is larger than the sum of its proper divisors (2709905).

631353343 is a wasteful number, since it uses less digits than its factorization.

631353343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2709904.

The product of its digits is 29160, while the sum is 31.

The square root of 631353343 is about 25126.7455712036. The cubic root of 631353343 is about 857.8752954383.

The spelling of 631353343 in words is "six hundred thirty-one million, three hundred fifty-three thousand, three hundred forty-three".