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102101332231 = 579911760641
BaseRepresentation
bin101111100010110110…
…1101011000100000111
3100202112121200002011101
41133011231223010013
53133100420112411
6114523225520531
710243111001353
oct1370555530407
9322477602141
10102101332231
113a3345a4108
1217955643147
139821c75ab2
144d28176463
1529c89668c1
hex17c5b6b107

102101332231 has 4 divisors (see below), whose sum is σ = 102103150864. Its totient is φ = 102099513600.

The previous prime is 102101332219. The next prime is 102101332247. The reversal of 102101332231 is 132233101201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132233101201 = 736791794719.

It is a cyclic number.

It is not a de Polignac number, because 102101332231 - 215 = 102101299463 is a prime.

It is a super-2 number, since 2×1021013322312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102101332199 and 102101332208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102101332831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 822330 + ... + 938311.

It is an arithmetic number, because the mean of its divisors is an integer number (25525787716).

Almost surely, 2102101332231 is an apocalyptic number.

102101332231 is a deficient number, since it is larger than the sum of its proper divisors (1818633).

102101332231 is an equidigital number, since it uses as much as digits as its factorization.

102101332231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1818632.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 102101332231 its reverse (132233101201), we get a palindrome (234334433432).

The spelling of 102101332231 in words is "one hundred two billion, one hundred one million, three hundred thirty-two thousand, two hundred thirty-one".

Divisors: 1 57991 1760641 102101332231