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2021132353 = 19106375387
BaseRepresentation
bin111100001111000…
…0000100001000001
312012212010011100211
41320132000201001
513114402213403
6532315514121
7101041225102
oct17036004101
95185104324
102021132353
11947970719
12484a58941
13262966006
141525da3a9
15bc68906d
hex78780841

2021132353 has 4 divisors (see below), whose sum is σ = 2127507760. Its totient is φ = 1914756948.

The previous prime is 2021132341. The next prime is 2021132359. The reversal of 2021132353 is 3532311202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2021132353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021132359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53187675 + ... + 53187712.

It is an arithmetic number, because the mean of its divisors is an integer number (531876940).

Almost surely, 22021132353 is an apocalyptic number.

It is an amenable number.

2021132353 is a deficient number, since it is larger than the sum of its proper divisors (106375407).

2021132353 is a wasteful number, since it uses less digits than its factorization.

2021132353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106375406.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 2021132353 is about 44957.0056053559. The cubic root of 2021132353 is about 1264.3430278689.

Adding to 2021132353 its reverse (3532311202), we get a palindrome (5553443555).

The spelling of 2021132353 in words is "two billion, twenty-one million, one hundred thirty-two thousand, three hundred fifty-three".

Divisors: 1 19 106375387 2021132353