313504155123505 has 4 divisors (see below), whose sum is σ = 376204986148212. Its totient is φ = 250803324098800.

The previous prime is 313504155123493. The next prime is 313504155123529. The reversal of 313504155123505 is 505321551405313.

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

It can be written as a sum of positive squares in 2 ways, for example, as 150305344168464 + 163198810955041 = 12259908^2 + 12774929^2 .

It is a de Polignac number, because none of the positive numbers 2^k-313504155123505 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, 31350415512346 + ... + 31350415512355.

It is an arithmetic number, because the mean of its divisors is an integer number (94051246537053).

Almost surely, 2^{313504155123505} is an apocalyptic number.

It is an amenable number.

313504155123505 is a deficient number, since it is larger than the sum of its proper divisors (62700831024707).

313504155123505 is an equidigital number, since it uses as much as digits as its factorization.

313504155123505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62700831024706.

The product of its (nonzero) digits is 675000, while the sum is 43.

The spelling of 313504155123505 in words is "three hundred thirteen trillion, five hundred four billion, one hundred fifty-five million, one hundred twenty-three thousand, five hundred five".