631581341 has 2 divisors, whose sum is σ = 631581342. Its totient is φ = 631581340.

The previous prime is 631581323. The next prime is 631581359. The reversal of 631581341 is 143185136.

631581341 = 17770² + 17771².

631581341 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (631581323) and next prime (631581359).

It can be written as a sum of positive squares in only one way, i.e., 315808441 + 315772900 = 17771^2 + 17770^2 .

It is a cyclic number.

It is not a de Polignac number, because 631581341 - 2⁶ = 631581277 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 631581298 and 631581307.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (631581241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315790670 + 315790671.

It is an arithmetic number, because the mean of its divisors is an integer number (315790671).

Almost surely, 2^631581341 is an apocalyptic number.

631581341 is the 17771-st centered square number.

It is an amenable number.

631581341 is a deficient number, since it is larger than the sum of its proper divisors (1).

631581341 is an equidigital number, since it uses as much as digits as its factorization.

631581341 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 32.

The square root of 631581341 is about 25131.2821200988. The cubic root of 631581341 is about 857.9785499860.

The spelling of 631581341 in words is "six hundred thirty-one million, five hundred eighty-one thousand, three hundred forty-one".