313121022078 has 16 divisors (see below), whose sum is σ = 632698148880. Its totient is φ = 103297656576.

The previous prime is 313121022077. The next prime is 313121022083. The reversal of 313121022078 is 870220121313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313121022077) 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, 269003733 + ... + 269004896.

It is an arithmetic number, because the mean of its divisors is an integer number (39543634305).

Almost surely, 2^313121022078 is an apocalyptic number.

313121022078 is an abundant number, since it is smaller than the sum of its proper divisors (319577126802).

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

313121022078 is a wasteful number, since it uses less digits than its factorization.

313121022078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538008731.

The product of its (nonzero) digits is 4032, while the sum is 30.

The spelling of 313121022078 in words is "three hundred thirteen billion, one hundred twenty-one million, twenty-two thousand, seventy-eight".