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10105690531 = 19531878449
BaseRepresentation
bin10010110100101100…
…01001100110100011
3222002021122021021111
421122112021212203
5131144024044111
64350440004151
7505266644416
oct113226114643
928067567244
1010105690531
114316442962
121b60460657
13c50874151
146bc1d5b7d
153e22d8a21
hex25a5899a3

10105690531 has 4 divisors (see below), whose sum is σ = 10637569000. Its totient is φ = 9573812064.

The previous prime is 10105690519. The next prime is 10105690559. The reversal of 10105690531 is 13509650101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13509650101 = 41329503661.

It is a cyclic number.

It is not a de Polignac number, because 10105690531 - 29 = 10105690019 is a prime.

It is a super-2 number, since 2×101056905312 (a number of 21 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 = 10105690493 and 10105690502.

It is not an unprimeable number, because it can be changed into a prime (10105690501) 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, 265939206 + ... + 265939243.

It is an arithmetic number, because the mean of its divisors is an integer number (2659392250).

Almost surely, 210105690531 is an apocalyptic number.

10105690531 is a deficient number, since it is larger than the sum of its proper divisors (531878469).

10105690531 is an equidigital number, since it uses as much as digits as its factorization.

10105690531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531878468.

The product of its (nonzero) digits is 4050, while the sum is 31.

The spelling of 10105690531 in words is "ten billion, one hundred five million, six hundred ninety thousand, five hundred thirty-one".

Divisors: 1 19 531878449 10105690531