631349 has 4 divisors (see below), whose sum is σ = 632940. Its totient is φ = 629760.

The previous prime is 631339. The next prime is 631357. The reversal of 631349 is 943136.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 208849 + 422500 = 457^2 + 650^2 .

It is a cyclic number.

It is not a de Polignac number, because 631349 - 2¹⁶ = 565813 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 (631339) 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, 359 + ... + 1179.

It is an arithmetic number, because the mean of its divisors is an integer number (158235).

2⁶³¹³⁴⁹ is an apocalyptic number.

It is an amenable number.

631349 is a deficient number, since it is larger than the sum of its proper divisors (1591).

631349 is an equidigital number, since it uses as much as digits as its factorization.

631349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1590.

The product of its digits is 1944, while the sum is 26.

The square root of 631349 is about 794.5747290218. The cubic root of 631349 is about 85.7873328362.

The spelling of 631349 in words is "six hundred thirty-one thousand, three hundred forty-nine".