315154221256 has 32 divisors (see below), whose sum is σ = 676626756480. Its totient is φ = 134806838400.

The previous prime is 315154221241. The next prime is 315154221259. The reversal of 315154221256 is 652122451513.

It is not an unprimeable number, because it can be changed into a prime (315154221259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5371740 + ... + 5430091.

It is an arithmetic number, because the mean of its divisors is an integer number (21144586140).

Almost surely, 2^315154221256 is an apocalyptic number.

It is an amenable number.

315154221256 is an abundant number, since it is smaller than the sum of its proper divisors (361472535224).

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

315154221256 is a wasteful number, since it uses less digits than its factorization.

315154221256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10802365 (or 10802361 counting only the distinct ones).

The product of its digits is 72000, while the sum is 37.

Adding to 315154221256 its reverse (652122451513), we get a palindrome (967276672769).

The spelling of 315154221256 in words is "three hundred fifteen billion, one hundred fifty-four million, two hundred twenty-one thousand, two hundred fifty-six".