631403293 has 2 divisors, whose sum is σ = 631403294. Its totient is φ = 631403292.

The previous prime is 631403237. The next prime is 631403317. The reversal of 631403293 is 392304136.

631403293 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 413634244 + 217769049 = 20338^2 + 14757^2 .

It is a cyclic number.

It is not a de Polignac number, because 631403293 - 2¹⁷ = 631272221 is a prime.

It is a super-2 number, since 2×631403293² = 797340236822487698, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (631403093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315701646 + 315701647.

It is an arithmetic number, because the mean of its divisors is an integer number (315701647).

Almost surely, 2^631403293 is an apocalyptic number.

It is an amenable number.

631403293 is a deficient number, since it is larger than the sum of its proper divisors (1).

631403293 is an equidigital number, since it uses as much as digits as its factorization.

631403293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 631403293 is about 25127.7395123397. The cubic root of 631403293 is about 857.8979186605.

The spelling of 631403293 in words is "six hundred thirty-one million, four hundred three thousand, two hundred ninety-three".