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91231410023 = 1349914063729
BaseRepresentation
bin101010011110111010…
…0001101011101100111
322201111001222211002222
41110331310031131213
52443320220110043
6105524445422555
76406541122145
oct1247564153547
9281431884088
1091231410023
1135766830726
121582126aa5b
1387abc93470
1445b6686595
15258e51dd68
hex153dd0d767

91231410023 has 8 divisors (see below), whose sum is σ = 98446110000. Its totient is φ = 84044838528.

The previous prime is 91231409977. The next prime is 91231410091. The reversal of 91231410023 is 32001413219.

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 91231410023 - 28 = 91231409767 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91231409974 and 91231410001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91231410223) 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, 7025378 + ... + 7038351.

It is an arithmetic number, because the mean of its divisors is an integer number (12305763750).

Almost surely, 291231410023 is an apocalyptic number.

91231410023 is a deficient number, since it is larger than the sum of its proper divisors (7214699977).

91231410023 is a wasteful number, since it uses less digits than its factorization.

91231410023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14064241.

The product of its (nonzero) digits is 1296, while the sum is 26.

The spelling of 91231410023 in words is "ninety-one billion, two hundred thirty-one million, four hundred ten thousand, twenty-three".

Divisors: 1 13 499 6487 14063729 182828477 7017800771 91231410023