1021343436 has 18 divisors (see below), whose sum is σ = 2581729332. Its totient is φ = 340447800.

The previous prime is 1021343413. The next prime is 1021343447. The reversal of 1021343436 is 6343431201.

1021343436 is a `hidden beast` number, since 10 + 213 + 4 + 3 + 436 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14185290 + ... + 14185361.

Almost surely, 2^1021343436 is an apocalyptic number.

It is an amenable number.

1021343436 is an abundant number, since it is smaller than the sum of its proper divisors (1560385896).

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

1021343436 is a wasteful number, since it uses less digits than its factorization.

1021343436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28370661 (or 28370656 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 1021343436 is about 31958.4642309358. The cubic root of 1021343436 is about 1007.0644546267.

Adding to 1021343436 its reverse (6343431201), we get a palindrome (7364774637).

It can be divided in two parts, 102134 and 3436, that added together give a triangular number (105570 = T₄₅₉).

The spelling of 1021343436 in words is "one billion, twenty-one million, three hundred forty-three thousand, four hundred thirty-six".