315781055 has 16 divisors (see below), whose sum is σ = 383063040. Its totient is φ = 249887232.

The previous prime is 315781033. The next prime is 315781061. The reversal of 315781055 is 550187513.

It is not a de Polignac number, because 315781055 - 2¹⁴ = 315764671 is a prime.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 322727 + ... + 323703.

It is an arithmetic number, because the mean of its divisors is an integer number (23941440).

Almost surely, 2^315781055 is an apocalyptic number.

315781055 is a deficient number, since it is larger than the sum of its proper divisors (67281985).

315781055 is a wasteful number, since it uses less digits than its factorization.

315781055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1618.

The product of its (nonzero) digits is 21000, while the sum is 35.

The square root of 315781055 is about 17770.2294582822. The cubic root of 315781055 is about 680.9711146441.

The spelling of 315781055 in words is "three hundred fifteen million, seven hundred eighty-one thousand, fifty-five".