315551113231050 has 144 divisors (see below), whose sum is σ = 892507602598560. Its totient is φ = 79708625665920.

The previous prime is 315551113230979. The next prime is 315551113231051. The reversal of 315551113231050 is 50132311155513.

315551113231050 is a `hidden beast` number, since 3 + 1 + 5 + 5 + 511 + 1 + 32 + 3 + 105 + 0 = 666.

It is a super-2 number, since 2×315551113231050² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 315551113230996 and 315551113231014.

It is not an unprimeable number, because it can be changed into a prime (315551113231051) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 69297112 + ... + 73710188.

It is an arithmetic number, because the mean of its divisors is an integer number (6197969462490).

Almost surely, 2^{315551113231050} is an apocalyptic number.

315551113231050 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 315551113231050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (446253801299280).

315551113231050 is an abundant number, since it is smaller than the sum of its proper divisors (576956489367510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

315551113231050 is a wasteful number, since it uses less digits than its factorization.

315551113231050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4421477 (or 4421469 counting only the distinct ones).

The product of its (nonzero) digits is 33750, while the sum is 36.

Adding to 315551113231050 its reverse (50132311155513), we get a palindrome (365683424386563).

The spelling of 315551113231050 in words is "three hundred fifteen trillion, five hundred fifty-one billion, one hundred thirteen million, two hundred thirty-one thousand, fifty".