631401413 has 2 divisors, whose sum is σ = 631401414. Its totient is φ = 631401412.

The previous prime is 631401409. The next prime is 631401439. The reversal of 631401413 is 314104136.

631401413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 493150849 + 138250564 = 22207^2 + 11758^2 .

It is a cyclic number.

It is not a de Polignac number, because 631401413 - 2² = 631401409 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (631401473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315700706 + 315700707.

It is an arithmetic number, because the mean of its divisors is an integer number (315700707).

Almost surely, 2^631401413 is an apocalyptic number.

It is an amenable number.

631401413 is a deficient number, since it is larger than the sum of its proper divisors (1).

631401413 is an equidigital number, since it uses as much as digits as its factorization.

631401413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 631401413 is about 25127.7021034555. The cubic root of 631401413 is about 857.8970671975.

Adding to 631401413 its reverse (314104136), we get a palindrome (945505549).

The spelling of 631401413 in words is "six hundred thirty-one million, four hundred one thousand, four hundred thirteen".