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1030231231993 = 7612395756509
BaseRepresentation
bin11101111110111101001…
…00010000110111111001
310122111012120211010112001
432333132210100313321
5113334403143410433
62105140502421001
7134301042661435
oct16773644206771
93574176733461
101030231231993
11367a11743a47
121477ba431761
13761c55318b2
1437c134839c5
151bbea81857d
hexefde910df9

1030231231993 has 8 divisors (see below), whose sum is σ = 1031646333960. Its totient is φ = 1028816292480.

The previous prime is 1030231231973. The next prime is 1030231232027. The reversal of 1030231231993 is 3991321320301.

It can be written as a sum of positive squares in 4 ways, for example, as 50788481769 + 979442750224 = 225363^2 + 989668^2 .

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 1030231231993 - 29 = 1030231231481 is a prime.

It is a super-2 number, since 2×10302312319932 (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1030231231903) 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, 18203023 + ... + 18259531.

It is an arithmetic number, because the mean of its divisors is an integer number (128955791745).

Almost surely, 21030231231993 is an apocalyptic number.

It is an amenable number.

1030231231993 is a deficient number, since it is larger than the sum of its proper divisors (1415101967).

1030231231993 is an equidigital number, since it uses as much as digits as its factorization.

1030231231993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81227.

The product of its (nonzero) digits is 26244, while the sum is 37.

The spelling of 1030231231993 in words is "one trillion, thirty billion, two hundred thirty-one million, two hundred thirty-one thousand, nine hundred ninety-three".

Divisors: 1 761 23957 56509 18231277 43003349 1353786113 1030231231993