311431311034340 has 24 divisors (see below), whose sum is σ = 747435146482752. Its totient is φ = 106776449497440.

The previous prime is 311431311034331. The next prime is 311431311034351. The reversal of 311431311034340 is 43430113134113.

It is a super-2 number, since 2×311431311034340² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 311431311034297 and 311431311034306.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1112254682126 + ... + 1112254682405.

It is an arithmetic number, because the mean of its divisors is an integer number (31143131103448).

Almost surely, 2^{311431311034340} is an apocalyptic number.

It is an amenable number.

311431311034340 is an abundant number, since it is smaller than the sum of its proper divisors (436003835448412).

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

311431311034340 is a wasteful number, since it uses less digits than its factorization.

311431311034340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2224509364547 (or 2224509364545 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 32.

Adding to 311431311034340 its reverse (43430113134113), we get a palindrome (354861424168453).

The spelling of 311431311034340 in words is "three hundred eleven trillion, four hundred thirty-one billion, three hundred eleven million, thirty-four thousand, three hundred forty".