312921055 has 8 divisors (see below), whose sum is σ = 375671952. Its totient is φ = 250225728.

The previous prime is 312921053. The next prime is 312921067. The reversal of 312921055 is 550129213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 312921055 - 2¹ = 312921053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312921053) 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, 289 + ... + 25018.

It is an arithmetic number, because the mean of its divisors is an integer number (46958994).

Almost surely, 2^312921055 is an apocalyptic number.

312921055 is a deficient number, since it is larger than the sum of its proper divisors (62750897).

312921055 is a wasteful number, since it uses less digits than its factorization.

312921055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27785.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 312921055 is about 17689.5747546401. The cubic root of 312921055 is about 678.9090457966.

The spelling of 312921055 in words is "three hundred twelve million, nine hundred twenty-one thousand, fifty-five".