1020311431144 has 64 divisors (see below), whose sum is σ = 1952660178000. Its totient is φ = 499676774400.

The previous prime is 1020311431129. The next prime is 1020311431151. The reversal of 1020311431144 is 4411341130201.

It can be written as a sum of positive squares in 8 ways, for example, as 159071750244 + 861239680900 = 398838^2 + 928030^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139822504 + ... + 139829800.

Almost surely, 2^{1020311431144} is an apocalyptic number.

It is an amenable number.

1020311431144 is a deficient number, since it is larger than the sum of its proper divisors (932348746856).

1020311431144 is a wasteful number, since it uses less digits than its factorization.

1020311431144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8534 (or 8530 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 1020311431144 its reverse (4411341130201), we get a palindrome (5431652561345).

The spelling of 1020311431144 in words is "one trillion, twenty billion, three hundred eleven million, four hundred thirty-one thousand, one hundred forty-four".