631450204401 has 4 divisors (see below), whose sum is σ = 841933605872. Its totient is φ = 420966802932.

The previous prime is 631450204397. The next prime is 631450204403. The reversal of 631450204401 is 104402054136.

631450204401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 631450204401 - 2² = 631450204397 is a prime.

It is a super-3 number, since 3×631450204401³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (631450204403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105241700731 + ... + 105241700736.

It is an arithmetic number, because the mean of its divisors is an integer number (210483401468).

Almost surely, 2^631450204401 is an apocalyptic number.

It is an amenable number.

631450204401 is a deficient number, since it is larger than the sum of its proper divisors (210483401471).

631450204401 is a wasteful number, since it uses less digits than its factorization.

631450204401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210483401470.

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 631450204401 its reverse (104402054136), we get a palindrome (735852258537).

The spelling of 631450204401 in words is "six hundred thirty-one billion, four hundred fifty million, two hundred four thousand, four hundred one".