631153 has 2 divisors, whose sum is σ = 631154. Its totient is φ = 631152.

The previous prime is 631151. The next prime is 631157. The reversal of 631153 is 351136.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 628849 + 2304 = 793^2 + 48^2 .

It is a cyclic number.

It is not a de Polignac number, because 631153 - 2¹ = 631151 is a prime.

Together with 631151, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 631153.

It is not a weakly prime, because it can be changed into another prime (631151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315576 + 315577.

It is an arithmetic number, because the mean of its divisors is an integer number (315577).

2⁶³¹¹⁵³ is an apocalyptic number.

It is an amenable number.

631153 is a deficient number, since it is larger than the sum of its proper divisors (1).

631153 is an equidigital number, since it uses as much as digits as its factorization.

631153 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 270, while the sum is 19.

The square root of 631153 is about 794.4513830311. The cubic root of 631153 is about 85.7784544622.

Adding to 631153 its reverse (351136), we get a palindrome (982289).

It can be divided in two parts, 631 and 153, that added together give a square (784 = 28²).

The spelling of 631153 in words is "six hundred thirty-one thousand, one hundred fifty-three".