311431111203434 has 4 divisors (see below), whose sum is σ = 467146666805154. Its totient is φ = 155715555601716.

The previous prime is 311431111203413. The next prime is 311431111203497. The reversal of 311431111203434 is 434302111134113.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 263542593660025 + 47888517543409 = 16233995^2 + 6920153^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 311431111203434.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77857777800857 + ... + 77857777800860.

Almost surely, 2^{311431111203434} is an apocalyptic number.

311431111203434 is a deficient number, since it is larger than the sum of its proper divisors (155715555601720).

311431111203434 is a wasteful number, since it uses less digits than its factorization.

311431111203434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155715555601719.

The product of its (nonzero) digits is 10368, while the sum is 32.

Adding to 311431111203434 its reverse (434302111134113), we get a palindrome (745733222337547).

The spelling of 311431111203434 in words is "three hundred eleven trillion, four hundred thirty-one billion, one hundred eleven million, two hundred three thousand, four hundred thirty-four".