311678041205 has 6 divisors (see below), whose sum is σ = 374015147478. Its totient is φ = 249341434280.

The previous prime is 311678041187. The next prime is 311678041223. The reversal of 311678041205 is 502140876113.

It is an interprime number because it is at equal distance from previous prime (311678041187) and next prime (311678041223).

It can be written as a sum of positive squares in only one way, i.e., 249342432964 + 62335608241 = 499342^2 + 249671^2 .

It is not a de Polignac number, because 311678041205 - 2¹⁴ = 311678024821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1123520 + ... + 1373190.

It is an arithmetic number, because the mean of its divisors is an integer number (62335857913).

Almost surely, 2^311678041205 is an apocalyptic number.

It is an amenable number.

311678041205 is a deficient number, since it is larger than the sum of its proper divisors (62337106273).

311678041205 is an frugal number, since it uses more digits than its factorization.

311678041205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499347 (or 249676 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The spelling of 311678041205 in words is "three hundred eleven billion, six hundred seventy-eight million, forty-one thousand, two hundred five".