631622423 has 2 divisors, whose sum is σ = 631622424. Its totient is φ = 631622422.

The previous prime is 631622417. The next prime is 631622429. The reversal of 631622423 is 324226136.

It is a balanced prime because it is at equal distance from previous prime (631622417) and next prime (631622429).

It is a cyclic number.

It is not a de Polignac number, because 631622423 - 2¹⁰ = 631621399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (631622429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315811211 + 315811212.

It is an arithmetic number, because the mean of its divisors is an integer number (315811212).

Almost surely, 2^631622423 is an apocalyptic number.

631622423 is a deficient number, since it is larger than the sum of its proper divisors (1).

631622423 is an equidigital number, since it uses as much as digits as its factorization.

631622423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 29.

The square root of 631622423 is about 25132.0994546815. The cubic root of 631622423 is about 857.9971523461.

Adding to 631622423 its reverse (324226136), we get a palindrome (955848559).

The spelling of 631622423 in words is "six hundred thirty-one million, six hundred twenty-two thousand, four hundred twenty-three".