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2021132131 = 15117837507
BaseRepresentation
bin111100001111000…
…0000011101100011
312012212010011001121
41320132000131203
513114402212011
6532315513111
7101041224334
oct17036003543
95185104047
102021132131
11947970537
12484a58797
13262965b95
141525da28b
15bc688e71
hex78780763

2021132131 has 8 divisors (see below), whose sum is σ = 2035929344. Its totient is φ = 2006353800.

The previous prime is 2021132111. The next prime is 2021132137. The reversal of 2021132131 is 1312311202.

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

It is a cyclic number.

It is not a de Polignac number, because 2021132131 - 225 = 1987577699 is a prime.

It is a super-2 number, since 2×20211321312 = 8169950181921202322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021132137) 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, 265480 + ... + 272986.

It is an arithmetic number, because the mean of its divisors is an integer number (254491168).

Almost surely, 22021132131 is an apocalyptic number.

2021132131 is a deficient number, since it is larger than the sum of its proper divisors (14797213).

2021132131 is a wasteful number, since it uses less digits than its factorization.

2021132131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9441.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2021132131 is about 44957.0031363302. The cubic root of 2021132131 is about 1264.3429815773.

Adding to 2021132131 its reverse (1312311202), we get a palindrome (3333443333).

The spelling of 2021132131 in words is "two billion, twenty-one million, one hundred thirty-two thousand, one hundred thirty-one".

Divisors: 1 151 1783 7507 269233 1133557 13384981 2021132131