311798090451 has 4 divisors (see below), whose sum is σ = 415730787272. Its totient is φ = 207865393632.

The previous prime is 311798090449. The next prime is 311798090509. The reversal of 311798090451 is 154090897113.

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

It is not a de Polignac number, because 311798090451 - 2¹ = 311798090449 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 311798090451.

It is not an unprimeable number, because it can be changed into a prime (311798094451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51966348406 + ... + 51966348411.

It is an arithmetic number, because the mean of its divisors is an integer number (103932696818).

Almost surely, 2^311798090451 is an apocalyptic number.

311798090451 is a deficient number, since it is larger than the sum of its proper divisors (103932696821).

311798090451 is a wasteful number, since it uses less digits than its factorization.

311798090451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103932696820.

The product of its (nonzero) digits is 272160, while the sum is 48.

The spelling of 311798090451 in words is "three hundred eleven billion, seven hundred ninety-eight million, ninety thousand, four hundred fifty-one".