311512444040 has 32 divisors (see below), whose sum is σ = 801031999680. Its totient is φ = 106804266432.

The previous prime is 311512443943. The next prime is 311512444043. The reversal of 311512444040 is 40444215113.

It is a junction number, because it is equal to n+sod(n) for n = 311512443994 and 311512444012.

It is not an unprimeable number, because it can be changed into a prime (311512444043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 556271942 + ... + 556272501.

It is an arithmetic number, because the mean of its divisors is an integer number (25032249990).

Almost surely, 2^311512444040 is an apocalyptic number.

It is an amenable number.

311512444040 is an abundant number, since it is smaller than the sum of its proper divisors (489519555640).

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

311512444040 is a wasteful number, since it uses less digits than its factorization.

311512444040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112544461 (or 1112544457 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 311512444040 its reverse (40444215113), we get a palindrome (351956659153).

The spelling of 311512444040 in words is "three hundred eleven billion, five hundred twelve million, four hundred forty-four thousand, forty".