1021340355 has 64 divisors (see below), whose sum is σ = 1897758720. Its totient is φ = 459426816.

The previous prime is 1021340261. The next prime is 1021340371. The reversal of 1021340355 is 5530431201.

1021340355 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1021340355 - 2²² = 1017146051 is a prime.

It is a super-2 number, since 2×1021340355² = 2086272241503052050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2666494 + ... + 2666876.

It is an arithmetic number, because the mean of its divisors is an integer number (29652480).

Almost surely, 2^1021340355 is an apocalyptic number.

1021340355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1021340355 is a deficient number, since it is larger than the sum of its proper divisors (876418365).

1021340355 is a wasteful number, since it uses less digits than its factorization.

1021340355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 1021340355 is about 31958.4160277070. The cubic root of 1021340355 is about 1007.0634419838.

Adding to 1021340355 its reverse (5530431201), we get a palindrome (6551771556).

It can be divided in two parts, 10213403 and 55, that multiplied together give a palindrome (561737165).

The spelling of 1021340355 in words is "one billion, twenty-one million, three hundred forty thousand, three hundred fifty-five".