1021534312 has 8 divisors (see below), whose sum is σ = 1915376850. Its totient is φ = 510767152.

The previous prime is 1021534247. The next prime is 1021534361. The reversal of 1021534312 is 2134351201.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 666362596 + 355171716 = 25814^2 + 18846^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63845887 + ... + 63845902.

Almost surely, 2^1021534312 is an apocalyptic number.

It is an amenable number.

1021534312 is a deficient number, since it is larger than the sum of its proper divisors (893842538).

1021534312 is a wasteful number, since it uses less digits than its factorization.

1021534312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127691795 (or 127691791 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1021534312 is about 31961.4504051365. The cubic root of 1021534312 is about 1007.1271865327.

Adding to 1021534312 its reverse (2134351201), we get a palindrome (3155885513).

The spelling of 1021534312 in words is "one billion, twenty-one million, five hundred thirty-four thousand, three hundred twelve".