311502420412 has 12 divisors (see below), whose sum is σ = 552596760016. Its totient is φ = 153617631840.

The previous prime is 311502420409. The next prime is 311502420421. The reversal of 311502420412 is 214024205113.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 533394264 + ... + 533394847.

Almost surely, 2^311502420412 is an apocalyptic number.

It is an amenable number.

311502420412 is a deficient number, since it is larger than the sum of its proper divisors (241094339604).

311502420412 is a wasteful number, since it uses less digits than its factorization.

311502420412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066789188 (or 1066789186 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 311502420412 its reverse (214024205113), we get a palindrome (525526625525).

The spelling of 311502420412 in words is "three hundred eleven billion, five hundred two million, four hundred twenty thousand, four hundred twelve".