1021313044 has 6 divisors (see below), whose sum is σ = 1787297834. Its totient is φ = 510656520.

The previous prime is 1021313009. The next prime is 1021313047. The reversal of 1021313044 is 4403131201.

It can be written as a sum of positive squares in only one way, i.e., 825872644 + 195440400 = 28738^2 + 13980^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021313047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127664127 + ... + 127664134.

Almost surely, 2^1021313044 is an apocalyptic number.

It is an amenable number.

1021313044 is a deficient number, since it is larger than the sum of its proper divisors (765984790).

1021313044 is a wasteful number, since it uses less digits than its factorization.

1021313044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255328265 (or 255328263 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1021313044 is about 31957.9887352130. The cubic root of 1021313044 is about 1007.0544654936.

Adding to 1021313044 its reverse (4403131201), we get a palindrome (5424444245).

The spelling of 1021313044 in words is "one billion, twenty-one million, three hundred thirteen thousand, forty-four".