312800003155 has 4 divisors (see below), whose sum is σ = 375360003792. Its totient is φ = 250240002520.

The previous prime is 312800003149. The next prime is 312800003183. The reversal of 312800003155 is 551300008213.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 312800003155 - 2³ = 312800003147 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31280000311 + ... + 31280000320.

It is an arithmetic number, because the mean of its divisors is an integer number (93840000948).

Almost surely, 2^312800003155 is an apocalyptic number.

312800003155 is a deficient number, since it is larger than the sum of its proper divisors (62560000637).

312800003155 is an equidigital number, since it uses as much as digits as its factorization.

312800003155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62560000636.

The product of its (nonzero) digits is 3600, while the sum is 28.

The spelling of 312800003155 in words is "three hundred twelve billion, eight hundred million, three thousand, one hundred fifty-five".