311430004112 has 30 divisors (see below), whose sum is σ = 636824765718. Its totient is φ = 147519472896.

The previous prime is 311430004091. The next prime is 311430004117. The reversal of 311430004112 is 211400034113.

It can be written as a sum of positive squares in only one way, i.e., 303098695936 + 8331308176 = 550544^2 + 91276^2 .

It is a super-2 number, since 2×311430004112² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (311430004117) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26953193 + ... + 26964744.

Almost surely, 2^311430004112 is an apocalyptic number.

It is an amenable number.

311430004112 is an abundant number, since it is smaller than the sum of its proper divisors (325394761606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311430004112 is a wasteful number, since it uses less digits than its factorization.

311430004112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53917983 (or 53917958 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 311430004112 its reverse (211400034113), we get a palindrome (522830038225).

The spelling of 311430004112 in words is "three hundred eleven billion, four hundred thirty million, four thousand, one hundred twelve".