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2023132981 is a prime number
BaseRepresentation
bin111100010010110…
…1000111100110101
312012222212210201011
41320211220330311
513120410223411
6532430432221
7101064226612
oct17045507465
95188783634
102023132981
11949007831
12485662671
132631b680c
1415299b509
15bc931c21
hex78968f35

2023132981 has 2 divisors, whose sum is σ = 2023132982. Its totient is φ = 2023132980.

The previous prime is 2023132973. The next prime is 2023133009. The reversal of 2023132981 is 1892313202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1576487025 + 446645956 = 39705^2 + 21134^2 .

It is a cyclic number.

It is not a de Polignac number, because 2023132981 - 23 = 2023132973 is a prime.

It is a super-2 number, since 2×20231329812 = 8186134117619892722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2023132921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1011566490 + 1011566491.

It is an arithmetic number, because the mean of its divisors is an integer number (1011566491).

Almost surely, 22023132981 is an apocalyptic number.

It is an amenable number.

2023132981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2023132981 is an equidigital number, since it uses as much as digits as its factorization.

2023132981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 2023132981 is about 44979.2505606752. The cubic root of 2023132981 is about 1264.7600623944.

The spelling of 2023132981 in words is "two billion, twenty-three million, one hundred thirty-two thousand, nine hundred eighty-one".