162343021 has 8 divisors (see below), whose sum is σ = 167269304. Its totient is φ = 157489920.

The previous prime is 162343003. The next prime is 162343061. The reversal of 162343021 is 120343261.

162343021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 9696996 + 152646025 = 3114^2 + 12355^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162343021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 162342983 and 162343001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162343061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13776 + ... + 22681.

It is an arithmetic number, because the mean of its divisors is an integer number (20908663).

Almost surely, 2^162343021 is an apocalyptic number.

It is an amenable number.

162343021 is a deficient number, since it is larger than the sum of its proper divisors (4926283).

162343021 is an equidigital number, since it uses as much as digits as its factorization.

162343021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36591.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 162343021 is about 12741.3900733005. The cubic root of 162343021 is about 545.5206661856.

Adding to 162343021 its reverse (120343261), we get a palindrome (282686282).

It can be divided in two parts, 1623 and 43021, that added together give a palindrome (44644).

The spelling of 162343021 in words is "one hundred sixty-two million, three hundred forty-three thousand, twenty-one".