1712312155 has 4 divisors (see below), whose sum is σ = 2054774592. Its totient is φ = 1369849720.

The previous prime is 1712312143. The next prime is 1712312177. The reversal of 1712312155 is 5512132171.

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

It is not a de Polignac number, because 1712312155 - 2¹⁹ = 1711787867 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171231211 + ... + 171231220.

It is an arithmetic number, because the mean of its divisors is an integer number (513693648).

Almost surely, 2^1712312155 is an apocalyptic number.

1712312155 is a deficient number, since it is larger than the sum of its proper divisors (342462437).

1712312155 is an equidigital number, since it uses as much as digits as its factorization.

1712312155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342462436.

The product of its digits is 2100, while the sum is 28.

The square root of 1712312155 is about 41380.0937045822. The cubic root of 1712312155 is about 1196.3575091353.

The spelling of 1712312155 in words is "one billion, seven hundred twelve million, three hundred twelve thousand, one hundred fifty-five".