311103232245 has 72 divisors (see below), whose sum is σ = 603031838136. Its totient is φ = 153158304384.

The previous prime is 311103232217. The next prime is 311103232259. The reversal of 311103232245 is 542232301113.

311103232245 is a `hidden beast` number, since 3 + 1 + 110 + 323 + 224 + 5 = 666.

311103232245 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 321489 + 311102910756 = 567^2 + 557766^2 .

It is not a de Polignac number, because 311103232245 - 2¹⁴ = 311103215861 is a prime.

It is a super-2 number, since 2×311103232245² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 61719 + ... + 791211.

Almost surely, 2^311103232245 is an apocalyptic number.

It is an amenable number.

311103232245 is a deficient number, since it is larger than the sum of its proper divisors (291928605891).

311103232245 is an frugal number, since it uses more digits than its factorization.

311103232245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729535 (or 729514 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 311103232245 its reverse (542232301113), we get a palindrome (853335533358).

The spelling of 311103232245 in words is "three hundred eleven billion, one hundred three million, two hundred thirty-two thousand, two hundred forty-five".