311431010423198 has 4 divisors (see below), whose sum is σ = 467146515634800. Its totient is φ = 155715505211598.

The previous prime is 311431010423177. The next prime is 311431010423201. The reversal of 311431010423198 is 891324010134113.

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

It is a super-2 number, since 2×311431010423198² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77857752605798 + ... + 77857752605801.

It is an arithmetic number, because the mean of its divisors is an integer number (116786628908700).

Almost surely, 2^{311431010423198} is an apocalyptic number.

311431010423198 is a deficient number, since it is larger than the sum of its proper divisors (155715505211602).

311431010423198 is a wasteful number, since it uses less digits than its factorization.

311431010423198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155715505211601.

The product of its (nonzero) digits is 62208, while the sum is 41.

The spelling of 311431010423198 in words is "three hundred eleven trillion, four hundred thirty-one billion, ten million, four hundred twenty-three thousand, one hundred ninety-eight".