315651331612451 has 4 divisors (see below), whose sum is σ = 316659802320792. Its totient is φ = 314642860904112.

The previous prime is 315651331612423. The next prime is 315651331612489. The reversal of 315651331612451 is 154216133156513.

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

It is a cyclic number.

It is not a de Polignac number, because 315651331612451 - 2¹⁸ = 315651331350307 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 315651331612396 and 315651331612405.

It is not an unprimeable number, because it can be changed into a prime (315651334612451) 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, 504235353701 + ... + 504235354326.

It is an arithmetic number, because the mean of its divisors is an integer number (79164950580198).

Almost surely, 2^{315651331612451} is an apocalyptic number.

315651331612451 is a deficient number, since it is larger than the sum of its proper divisors (1008470708341).

315651331612451 is a wasteful number, since it uses less digits than its factorization.

315651331612451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008470708340.

The product of its digits is 972000, while the sum is 47.

Adding to 315651331612451 its reverse (154216133156513), we get a palindrome (469867464768964).

The spelling of 315651331612451 in words is "three hundred fifteen trillion, six hundred fifty-one billion, three hundred thirty-one million, six hundred twelve thousand, four hundred fifty-one".