311555402452145 has 8 divisors (see below), whose sum is σ = 374842635641856. Its totient is φ = 248593553495536.

The previous prime is 311555402452139. The next prime is 311555402452157. The reversal of 311555402452145 is 541254204555113.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 311555402452145 - 2⁴⁰ = 310455890824369 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 311555402452145.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81346056167 + ... + 81346059996.

It is an arithmetic number, because the mean of its divisors is an integer number (46855329455232).

Almost surely, 2^{311555402452145} is an apocalyptic number.

It is an amenable number.

311555402452145 is a deficient number, since it is larger than the sum of its proper divisors (63287233189711).

311555402452145 is a wasteful number, since it uses less digits than its factorization.

311555402452145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162692116551.

The product of its (nonzero) digits is 2400000, while the sum is 47.

The spelling of 311555402452145 in words is "three hundred eleven trillion, five hundred fifty-five billion, four hundred two million, four hundred fifty-two thousand, one hundred forty-five".