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101054431 = 113894287
BaseRepresentation
bin1100000010111…
…11011111011111
321001011002121201
412001133133133
5201332220211
614005540331
72334643222
oct601373737
9231132551
10101054431
1152051765
1229a146a7
1317c2272a
14d5c75b9
158d120c1
hex605f7df

101054431 has 4 divisors (see below), whose sum is σ = 101948832. Its totient is φ = 100160032.

The previous prime is 101054419. The next prime is 101054461. The reversal of 101054431 is 134450101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134450101 = 1071256543.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-101054431 is a prime.

It is a super-2 number, since 2×1010544312 = 20423996049467522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101054399 and 101054408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101054461) 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, 447031 + ... + 447256.

It is an arithmetic number, because the mean of its divisors is an integer number (25487208).

Almost surely, 2101054431 is an apocalyptic number.

101054431 is a deficient number, since it is larger than the sum of its proper divisors (894401).

101054431 is an equidigital number, since it uses as much as digits as its factorization.

101054431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894400.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 101054431 is about 10052.5832998290. The cubic root of 101054431 is about 465.7845943982.

The spelling of 101054431 in words is "one hundred one million, fifty-four thousand, four hundred thirty-one".

Divisors: 1 113 894287 101054431