312505144355 has 4 divisors (see below), whose sum is σ = 375006173232. Its totient is φ = 250004115480.

The previous prime is 312505144351. The next prime is 312505144409. The reversal of 312505144355 is 553441505213.

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

It is not a de Polignac number, because 312505144355 - 2² = 312505144351 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312505144351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31250514431 + ... + 31250514440.

It is an arithmetic number, because the mean of its divisors is an integer number (93751543308).

Almost surely, 2^312505144355 is an apocalyptic number.

312505144355 is a deficient number, since it is larger than the sum of its proper divisors (62501028877).

312505144355 is an equidigital number, since it uses as much as digits as its factorization.

312505144355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62501028876.

The product of its (nonzero) digits is 180000, while the sum is 38.

Adding to 312505144355 its reverse (553441505213), we get a palindrome (865946649568).

The spelling of 312505144355 in words is "three hundred twelve billion, five hundred five million, one hundred forty-four thousand, three hundred fifty-five".