315221314642 has 16 divisors (see below), whose sum is σ = 509262509952. Its totient is φ = 145469946960.

The previous prime is 315221314637. The next prime is 315221314643. The reversal of 315221314642 is 246413122513.

It is a junction number, because it is equal to n+sod(n) for n = 315221314598 and 315221314607.

It is not an unprimeable number, because it can be changed into a prime (315221314643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469834 + ... + 922597.

It is an arithmetic number, because the mean of its divisors is an integer number (31828906872).

Almost surely, 2^315221314642 is an apocalyptic number.

315221314642 is a deficient number, since it is larger than the sum of its proper divisors (194041195310).

315221314642 is a wasteful number, since it uses less digits than its factorization.

315221314642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401153.

The product of its digits is 34560, while the sum is 34.

The spelling of 315221314642 in words is "three hundred fifteen billion, two hundred twenty-one million, three hundred fourteen thousand, six hundred forty-two".