311431030431040 has 56 divisors (see below), whose sum is σ = 798640921317960. Its totient is φ = 114989918926848.

The previous prime is 311431030430957. The next prime is 311431030431061. The reversal of 311431030431040 is 40134030134113.

It can be written as a sum of positive squares in 4 ways, for example, as 14881139481664 + 296549890949376 = 3857608^2 + 17220624^2 .

It is a congruent number.

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, 37431610075 + ... + 37431618394.

It is an arithmetic number, because the mean of its divisors is an integer number (14261445023535).

Almost surely, 2^{311431030431040} is an apocalyptic number.

It is an amenable number.

311431030431040 is an abundant number, since it is smaller than the sum of its proper divisors (487209890886920).

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

311431030431040 is a wasteful number, since it uses less digits than its factorization.

311431030431040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74863228499 (or 74863228489 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 311431030431040 its reverse (40134030134113), we get a palindrome (351565060565153).

The spelling of 311431030431040 in words is "three hundred eleven trillion, four hundred thirty-one billion, thirty million, four hundred thirty-one thousand, forty".