311341203512 has 8 divisors (see below), whose sum is σ = 583764756600. Its totient is φ = 155670601752.

The previous prime is 311341203491. The next prime is 311341203517. The reversal of 311341203512 is 215302143113.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×311341203512² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311341203517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19458825212 + ... + 19458825227.

It is an arithmetic number, because the mean of its divisors is an integer number (72970594575).

Almost surely, 2^311341203512 is an apocalyptic number.

It is an amenable number.

311341203512 is a deficient number, since it is larger than the sum of its proper divisors (272423553088).

311341203512 is a wasteful number, since it uses less digits than its factorization.

311341203512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38917650445 (or 38917650441 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 311341203512 its reverse (215302143113), we get a palindrome (526643346625).

The spelling of 311341203512 in words is "three hundred eleven billion, three hundred forty-one million, two hundred three thousand, five hundred twelve".