631413160451 has 4 divisors (see below), whose sum is σ = 631414809792. Its totient is φ = 631411511112.

The previous prime is 631413160439. The next prime is 631413160493. The reversal of 631413160451 is 154061314136.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-631413160451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (631413160351) 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, 81425 + ... + 1126701.

It is an arithmetic number, because the mean of its divisors is an integer number (157853702448).

Almost surely, 2^631413160451 is an apocalyptic number.

631413160451 is a deficient number, since it is larger than the sum of its proper divisors (1649341).

631413160451 is a wasteful number, since it uses less digits than its factorization.

631413160451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1649340.

The product of its (nonzero) digits is 25920, while the sum is 35.

Adding to 631413160451 its reverse (154061314136), we get a palindrome (785474474587).

The spelling of 631413160451 in words is "six hundred thirty-one billion, four hundred thirteen million, one hundred sixty thousand, four hundred fifty-one".